UK semiconductor companies

Southampton · South East · UK headquartered

Southampton-based supplier of new and refurbished semiconductor process and metrology equipment, including etch, deposition and thermal processing systems from named original equipment manufacturers, serving semiconductor, MEMS and emerging-technology customers.

Eastbourne · South East · UK headquartered

East Sussex company designing graphene-integrated photonic interconnect chips for high-bandwidth optical transceivers used in data centres and telecoms.

South West · UK site of an international group · part of A-Gas Group

UK supplier of photosensitive chemicals and plating solutions to semiconductor, printed circuit board and advanced packaging customers, within the A-Gas group.

Pickering · Yorkshire · UK headquartered

Microwave filter and waveguide assemblies for satellite communications and radar.

East of England · UK site of an international group · part of Accelonix Group

3D X-ray and computed laminography inspection services for microelectronic and semiconductor components.

Armagh · Northern Ireland · UK headquartered · part of Advanced Ceramic Engineering

Craigavon manufacturer of precision alumina and technical ceramic components for semiconductor and vacuum applications.

Nottingham · East Midlands · UK headquartered

FPGA-based real-time signal processing hardware for radar and LiDAR sensing.

Luton · East of England · UK headquartered

Provides subcontract IC programming, tape-and-reel and device handling services for semiconductor supply chains.

Ruislip · London · UK headquartered

RF and microwave semiconductor distribution with design support.

Glasgow · Scotland · UK headquartered

Provides mechanical, electrical and process engineering design for semiconductor cleanrooms and wafer fab facilities.

Stretford · North West · UK headquartered

Stretford manufacturer of thin-film semiconductor Hall-effect sensor elements and magnetic sensing devices, supplying custom Hall sensors and sensor wafers to instrumentation, industrial and research customers.

Worthing · South East · UK headquartered

Supplies new and remanufactured spares and refurbished assemblies for semiconductor ion implantation tools.

Sheffield · Yorkshire · UK headquartered

Sheffield company combining deterministic photon source technology with silicon photonics, using external foundries to build photonic quantum computing chipsets.

Glasgow · Scotland · UK headquartered

Develops compact semiconductor radiation detectors.

Chessington · London · UK headquartered

Machines quartz, silicon carbide and other ultra-hard materials into precision components for semiconductor process equipment.

Cambridge · East of England · UK headquartered

Cambridge semiconductor IP company generating configurable analogue and mixed-signal subsystems for integration into customer chip designs.

London · London · UK headquartered

Reading-based custom SoC and ASIC design house, formerly trading as Sondrel, providing architecture, front-end and back-end design and tapeout management for AI, automotive and networking customers.

Walton-on-Thames · South East · UK site of an international group · part of Air Products and Chemicals, Inc.

Supplies electronic specialty gases, delivery systems and on-site services to semiconductor and compound semiconductor manufacturers.

Weston-super-Mare · South West · UK headquartered

Supplies ultrapure water and effluent treatment systems for microelectronics and semiconductor manufacturing.

South East · UK headquartered

Memory and microcontroller device programming services.

Bristol · South West · UK headquartered

Provides semiconductor design verification, formal verification and ASIC/FPGA engineering consultancy.

Edinburgh · Scotland · UK site of an international group · part of TUV NORD ALTER Technology (Spain / Germany)

Scottish operation of the TUV NORD ALTER Technology group providing semiconductor component qualification, screening, test, failure analysis and microelectronic assembly services for space, defence and high-reliability applications.

Glasgow · Scotland · UK headquartered · part of Affiliated with Amethyst Research Inc. (US)

Glasgow-registered infrared detector specialist growing III-V epitaxial material and designing infrared detector and avalanche photodiode devices, operating alongside an affiliated United States business.

London · London · UK headquartered

London analogue and mixed-signal design house delivering high-speed IP such as phase-locked loops, converters and SerDes, plus custom layout at advanced process nodes for chiplet and system-on-chip customers.

Wisbech · East of England · UK headquartered

UK authorised semiconductor and component distributor with technical design support and supply-chain services.

Cumbernauld · Scotland · UK headquartered

Cumbernauld analogue, mixed-signal and radio-frequency integrated circuit design consultancy providing semiconductor design and project management services.

Bath · South West · UK headquartered

Distributor of laser diode and optoelectronic semiconductor components.

York · Yorkshire · UK headquartered

York-based fabless design company developing a multi-core RISC-V real-time processor for automotive zone controllers and uncrewed aircraft flight control, taking part in UK chip design accelerator programmes.

Didcot · South East · UK headquartered

Oxfordshire manufacturer of wafer bonding and aligner-bonder systems with integrated optical alignment, built and tested at its Harwell facility for silicon and MEMS wafer processing.

Thornbury · South West · UK headquartered

Refurbishes, services and repairs vacuum plant and pumps used in semiconductor and thin-film process systems.

Lee-on-the-Solent · South East · UK headquartered

Hampshire company offering semiconductor test development, tester access and small-batch production test for fabless power, analogue and mixed-signal chip makers.

Craigavon · Northern Ireland · UK site of an international group · part of Ardmac

Cleanroom design and build contractor with a Craigavon office, including delivery of microelectronics cleanrooms for semiconductor manufacturing in Northern Ireland.

Cambridge · East of England · UK headquartered

Cambridge-headquartered semiconductor IP company licensing processor architectures and designs used in mobile, embedded, automotive and data-centre chips manufactured worldwide.

Bromborough · North West · UK headquartered · part of ASG Group

Wirral precision engineering business manufacturing ultra-high-vacuum chambers and assemblies for the semiconductor sector, with cleanroom preparation for fab equipment.

Swindon · South West · UK headquartered

Swindon company designing licensable low-power power-management circuit blocks, including regulators and references, together with custom power-management chips for wearable, medical and IoT devices.

Hitchin · East of England · UK headquartered

Hertfordshire electronic design consultancy providing ASIC and FPGA design services to consumer, industrial and defence customers since 1992.

Stevenage · East of England · UK headquartered

Franchised electronic component distributor with a semiconductor design-in and field applications engineering team.

Sedgefield · North East · UK headquartered

Sedgefield designer and manufacturer of gallium arsenide and indium phosphide compound semiconductor optical modulators for communications, satellite and defence sensing systems.

London · London · UK headquartered

London company supplying formal verification methodology, training and proprietary tooling used by semiconductor design teams to prove correctness of digital hardware, including floating-point and accelerator designs.

Paignton · South West · UK site of an international group · part of AMS Technologies AG

Devon specialist in hermetic packaging and assembly of semiconductor photonic devices, including laser and detector die and photonic integrated circuits, for quantum, telecommunications, defence and sensing customers.

Birmingham · West Midlands · UK headquartered

Precious metal sputtering targets for semiconductor thin-film deposition.

Bristol · South West · UK headquartered

Bristol company developing millimetre-wave semiconductor IP and modules for high-capacity wireless links in rail, defence and telecommunications networks.

Cambridge · East of England · UK headquartered

Cambridge fabless design company developing a proprietary memory access architecture intended to reduce data bottlenecks in AI, high-performance and edge computing, licensed alongside RISC-V processor cores.

Guildford · South East · UK site of an international group · part of Linde plc

Supplies high-purity specialty and lithography gases to UK semiconductor manufacturers.

Derby · East Midlands · UK site of an international group

UK operation supporting lithography and process chemicals for semiconductor manufacture.

Larne · Northern Ireland · UK site of an international group · part of Brolis Defence Group (Lithuania)

Northern Ireland photonics and electro-optical systems company of the Lithuanian Brolis Defence Group.

Durham · North East · UK site of an international group · part of Bruker Corporation

UK design and manufacture of X-ray diffraction and reflectivity metrology tools for semiconductor fabs.

Oldham · North West · UK headquartered

Stocks and supplies power semiconductors including thyristors, IGBTs and diode modules with sourcing and obsolescence support.

Bracknell · South East · UK site of an international group · part of Cadence Design Systems, Inc. (United States)

United Kingdom subsidiary of Cadence Design Systems, whose Bracknell-based engineers work on ASIC physical design, verification tooling and semiconductor design intellectual property.

Stirling · Scotland · UK headquartered

Solid-state and semiconductor laser design consultancy.

Cambridge · East of England · UK headquartered

Cambridge fabless company designing gallium nitride power transistors and integrated circuits for power conversion in consumer, industrial and automotive systems.

Cambridge · East of England · UK headquartered

Cambridge University spin-out designing power semiconductor devices across silicon, silicon carbide, gallium nitride and other wide-bandgap materials, with simulation, layout, packaging and test services. Trades as Camutronics.

Colchester · East of England · UK headquartered

Colchester maker of die-bonding equipment for semiconductor and optoelectronic assembly, with a supporting contract assembly service.

South East · UK headquartered

Develops custom ASIC biosensor chips for cardiac sensing products.

Belfast · Northern Ireland · UK headquartered

Belfast company manufacturing nanofabricated plasmonic sensor chips that detect surface binding events, used for bioprocess and drug-quality monitoring; a Queen's University Belfast spin-out.

Cardiff · Wales · UK headquartered

Cardiff-linked company producing metal-mesh terahertz filters and micropatterned components used in detector instrumentation.

Newport, Isle of Wight · South East · UK headquartered

Aluminium nitride and alumina substrates for power semiconductor and microelectronic packaging.

South East · UK headquartered

Supplies semiconductor film metrology systems for advanced packaging measurement.

Cambridge · East of England · UK headquartered

Cambridge company building a commercial chip design-flow platform that combines open-source electronic design automation tooling with proprietary automation, taking digital and mixed-signal designs from RTL through layout to tape-out.

Cambridge · East of England · UK headquartered

Chipletti develops semiconductor architectures for physical-AI acceleration using advanced chiplet and 3D integration approaches. The Cambridge-based business operates as a fabless semiconductor design company and participates in UK semiconductor development programmes.

Manchester · North West · UK headquartered

Independent stocking distributor and semiconductor sourcing specialist.

Edinburgh · Scotland · UK site of an international group · part of Cirrus Logic, Inc. (United States)

Semiconductor company with a substantial Edinburgh design centre developing audio and mixed-signal chips, originating in the former Wolfson Microelectronics business.

Cambridge · East of England · UK headquartered

University of Cambridge spin-out developing photon-counting X-ray detectors based on halide perovskite semiconductor materials for medical imaging, security screening and industrial inspection.

Lochgelly · Scotland · UK headquartered

Fife-based pure-play silicon carbide wafer foundry providing device fabrication for power semiconductor customers developing SiC diodes and transistors.

South East · UK headquartered

Cleanroom design, construction and refurbishment with microelectronics clients.

Cardiff · Wales · UK headquartered

Delivers cleanroom, mechanical, electrical and toxic gas system engineering for semiconductor fabrication facilities.

Worcester · West Midlands · UK headquartered

Component obsolescence management consultancy covering semiconductor devices.

Maldon · East of England · UK headquartered

Essex-headquartered semiconductor group designing mixed-signal, RF and voice processing integrated circuits for communications and storage markets, including MMIC design services acquired with Plextek RFI in 2020.

Bristol · South West · UK site of an international group · part of Codasip GmbH

UK design centres in Bristol and Cambridge developing customisable RISC-V processor IP and associated design-automation tooling; the UK establishment of a Munich-headquartered group.

Bristol · South West · UK headquartered

Bristol developer of an artificial-intelligence-driven verification analytics platform that ingests simulation, emulation and trace data to flag anomalies and speed root-cause debugging in ASIC and system-on-chip verification flows.

Cambridge · East of England · UK headquartered

Cambridge company developing licensable digital broadcast and wireless physical-layer IP cores alongside ASIC and FPGA design services.

Cardiff · Wales · UK headquartered

Cardiff joint venture providing compound semiconductor epitaxy development and pilot production services, bridging research work and volume wafer manufacturing.

Glenrothes · Scotland · UK site of an international group · part of MacDermid Alpha Electronics Solutions

Glenrothes manufacturer of photomasks and reduction reticles for semiconductor, MEMS, compound semiconductor and optoelectronic wafer fabrication; part of the US-owned MacDermid Alpha group.

Honiton · South West · UK headquartered

Trades excess semiconductor and integrated circuit inventory.

Lincoln · East Midlands · UK headquartered

Lincoln-based semiconductor test equipment business supplying automated test equipment, probers and handlers while designing and manufacturing its own test interface hardware including load boards, probe cards and temperature-forcing systems.

New Milton · South East · UK headquartered

Manufactures thick-film hybrid circuits incorporating bare die and wire bonding alongside wider contract electronics manufacturing.

Guildford · South East · UK headquartered

Develops automated test equipment for power discrete semiconductors including SiC and GaN devices.

London · London · UK headquartered

London company designing silicon hardware root-of-trust IP that derives cryptographic keys from chip-level physical variation, licensed into connected-device chips alongside a key-management platform.

West Midlands · UK headquartered

Distributor of semiconductors and memory products.

Andover · South East · UK headquartered

Hampshire electronics manufacturing company offering advanced semiconductor packaging, die attach, wire bonding and module assembly services.

Maiden Newton · South West · UK headquartered

Supplies device programmers and provides IC programming services covering a wide range of semiconductor device types.

Kingsbridge · South West · UK headquartered

Manufactures and remanufactures CVD/PVD deposition tools for semiconductor and MEMS fabrication.

Saltaire · Yorkshire · UK headquartered

Designs and manufactures GaN and GaAs solid-state microwave power amplifier modules for radar and defence.

Oldham · North West · UK site of an international group · part of Diodes Incorporated (United States)

Semiconductor manufacturer with an Oldham design and wafer operation, originating in the former Zetex business, producing analogue and discrete devices.

Bristol · South West · UK headquartered

Bristol-headquartered company designing and manufacturing thin-film lithium niobate photonic processor chips at its own Southampton fabrication facility for signal processing and photonic quantum computing.

Bristol · South West · UK headquartered

Thermal interface and functional materials for semiconductor device thermal management.

Lincoln · East Midlands · UK site of an international group · part of Zhuzhou CRRC Times Electric Co., Ltd (China)

Lincoln manufacturer of high-power semiconductor modules, thyristors and IGBT devices for rail traction, energy transmission and industrial drive systems.

Burgess Hill · South East · UK site of an international group · part of Atlas Copco Group

Manufacturer of vacuum pumps and abatement systems widely used in semiconductor fabrication, with UK engineering and manufacturing operations.

Didcot · South East · UK site of an international group · part of De Beers Group

Synthetic diamond materials company with UK research and production operations, supplying diamond wafers and components used in electronics and quantum devices.

West Midlands · UK headquartered

UK microelectronic manufacturing and avionics and counter-UAS hardware engineering.

Macclesfield · North West · UK headquartered

Macclesfield formulator of photoresists and related lithography chemistries for semiconductor, MEMS and microfabrication processing, including custom resist development and small-volume supply.

Henley-on-Thames · South East · UK site of an international group · part of Engis Corporation

Supplies precision lapping, polishing and CMP consumables used for silicon and compound semiconductor surface finishing.

Abingdon · South East · UK headquartered

UK-headquartered semiconductor design company providing ASIC design services and custom silicon across communications, automotive, industrial and healthcare applications.

Barry · Wales · UK site of an international group · part of Entegris, Inc. (United States)

Barry, Wales site of the global Entegris semiconductor materials business, registered for the manufacture, import and sale of chemical-mechanical planarisation materials used to polish silicon and compound-semiconductor wafers including silicon carbide and gallium nitride.

Manchester · North West · UK headquartered

Manchester supplier of high-purity materials, targets and process consumables used in thin-film deposition and semiconductor and optoelectronic device fabrication, alongside broader advanced-materials supply.

Redcar · North East · UK headquartered

Microengineering of microfluidic and electronic chip devices.

Redcar · North East · UK headquartered

Teesside manufacturer of high-purity atomic layer and chemical vapour deposition precursor chemicals and delivery vessels for semiconductor thin-film processes, developing and scaling molecules from laboratory to production.

Bristol · South West · UK headquartered

Semiconductor tool installation, decontamination and relocation services, including ion implanters.

Somersham · East of England · UK headquartered

Cambridgeshire designer and builder of physical vapour deposition sputtering and evaporation systems originally for semiconductor use, now also serving space and defence customers, with service and upgrades for legacy tools.

Rowlands Gill · North East · UK headquartered

North East company offering physical failure analysis for semiconductors and electronics using electron microscopy, focused ion beam and related techniques.

South West · UK headquartered

Semiconductor-based electronic support measures sensor hardware.

Kibworth · East Midlands · UK headquartered

Kibworth manufacturer of thermoelectric semiconductor coolers and generators and thermal management assemblies for aerospace, automotive and industrial customers.

Leeds · Yorkshire · UK site of an international group

Authorised distributor with semiconductor franchises and UK design support resources.

Newhaven · South East · UK headquartered

Manufactures cleanroom wet-processing equipment including wet benches and spin rinser dryers for fabs.

Cardiff · Wales · UK headquartered

Cardiff company offering design-to-device services for compound semiconductor photonics, covering device and epitaxial design in-house with epitaxy and fabrication carried out through partner facilities in the South Wales cluster.

Sedgefield · North East · UK headquartered

County Durham company designing and manufacturing millimetre-wave and radio-frequency components and modules for space, defence and telecommunications customers.

Guildford · South East · UK headquartered

Guildford company developing passive all-optical photonic integrated circuit switches for data centre networks, aimed at reducing power use in artificial intelligence infrastructure.

London · London · UK headquartered

London company supplying AI-based production planning, scheduling and optimisation software for semiconductor wafer fabs.

Collingbourne Ducis · South West · UK headquartered

Wiltshire company providing integrated circuit assembly, ceramic and plastic packaging and military-standard test services, largely to support obsolete and end-of-life semiconductor components.

Cambridge · East of England · UK headquartered

Fabless company developing RF front-end filtering chips for multi-band mobile devices.

London · London · UK headquartered

London company designing in-memory compute accelerator chips for large language model inference, with chip design teams in London and Bristol.

Glasgow · Scotland · UK headquartered

Glasgow-based fabless semiconductor company designing USB and interface bridging chips together with the supporting driver software used by equipment makers.

Riddings · East Midlands · UK site of an international group

UK manufacture and supply of ultra-pure process chemicals and CMP slurries for semiconductor fabs.

Burgess Hill · South East · UK headquartered

Specialist power semiconductor supplier providing thyristors, diodes, IGBTs and assemblies with design and sourcing support.

Stroud · South West · UK headquartered · part of Presto Engineering Group

Stroud and Bristol design house producing full-custom analogue and digital ASICs from specification to fabless silicon supply for avionics, space and industrial customers.

Ilminster · South West · UK headquartered

Somerset photonics manufacturer producing acousto-optic, fibre-optic and precision optical components, including products used in semiconductor manufacturing equipment.

Huntingdon · East of England · UK headquartered

Supplies high-purity metals, sputtering targets and specialist materials used in semiconductor thin-film processing.

Bristol · South West · UK headquartered · part of SoftBank Group

Bristol-based designer of processors for artificial intelligence workloads, operating as part of the SoftBank Group following its 2024 acquisition.

Manchester · North West · UK headquartered

Manchester spin-out supplying graphene and two-dimensional crystal materials for micro- and nanoelectronic device fabrication.

Tonbridge · South East · UK headquartered · part of SDI Group plc

Tonbridge manufacturer of precision photolithographic micropatterns and glass photomasks produced with electron beam and direct write laser systems, serving semiconductor and micro-device lithography.

Haverhill · East of England · UK headquartered

Designs, builds and maintains cleanrooms, including microelectronics and semiconductor-related environments.

Bristol · South West · UK headquartered

Bristol hardware company, formerly Qontrol, designing an optoelectronic inference coprocessor that performs matrix-vector multiplication optically for very low latency AI decisions.

Hatley St George · East of England · UK headquartered

X-ray inspection services covering die and bond-wire analysis and counterfeit detection.

Livingston · Scotland · UK headquartered

Livingston company providing thin-film optical coatings for laser diodes together with back-end wafer processing services including thinning, lithography and reactive ion etching.

London · London · UK headquartered

London company providing automated toolflows that map artificial intelligence accelerator designs onto FPGA silicon, together with video processing IP; founded by Imperial College London researchers.

Southampton · South East · UK headquartered

Southampton fabless designer of analogue and mixed-signal CMOS integrated circuits for high-speed optical communications, including transimpedance amplifiers, laser and VCSEL drivers and transceiver chipsets.

Paignton · South West · UK headquartered

Torbay advanced-packaging engineering firm providing die attach, flip-chip and optical and photonic packaging design, assembly coordination, failure analysis and validation services to semiconductor, photonics and quantum customers.

London · London · UK headquartered

Fabless design company developing a processing-in-memory accelerator that transforms enterprise and database data at memory speed for analytics and AI pipelines, supported by UK chip start-up programmes.

Leeds · Yorkshire · UK headquartered

Sensor signal conditioning electronics for extreme environment sensing.

Carluke · Scotland · UK headquartered

Refurbishment of semiconductor process equipment assemblies to OEM specification.

Belfast · Northern Ireland · UK headquartered · part of IceMOS Technology (USA)

Belfast company providing silicon wafer processing and foundry services, including deep reactive-ion etching, MEMS structures and specialist substrate products.

Blantyre · Scotland · UK site of an international group · part of Ichor Systems, Inc. (United States)

Blantyre operation manufacturing and refurbishing gas and fluid delivery systems, valves and precision-machined components for semiconductor fabrication equipment makers.

Shepperton · South East · UK headquartered

Shepperton precision micro-manufacturing company offering wafer dicing, thinning and back-grinding, die bonding, chip-on-board assembly, thin-film deposition and dimensional metrology for photonics, quantum and semiconductor customers.

Glasgow · Scotland · UK headquartered

Glasgow epitaxy foundry providing custom MOCVD and MBE growth of arsenide, antimonide and phosphide structures for lasers, LEDs, optical amplifiers and photodetectors.

Kings Langley · East of England · UK headquartered

Semiconductor IP company licensing graphics and compute processor designs to chip makers for use in mobile, automotive and embedded applications.

Leamington Spa · West Midlands · UK site of an international group

Semiconductor distributor with field application engineering and design-in support for the UK and Ireland.

Sedgefield · North East · UK headquartered

County Durham open-access microfabrication facility offering MEMS and sensor process development, prototyping and small-volume production services.

Bristol · South West · UK site of an international group · part of Infineon Technologies AG

Bristol design centre developing automotive microcontroller IP and radar subsystems.

Abingdon · South East · UK headquartered

Abingdon company producing automated 300mm wafer metrology systems that combine atomic force microscopy with interferometry for in-line three-dimensional measurement during chip manufacturing.

Andover · South East · UK headquartered

Hampshire supplier of semiconductor wafers, substrates and assembly and test equipment, with some in-house wafer processing such as dicing, thinning and coating.

Manchester · North West · UK headquartered

University of Manchester spin-out designing and manufacturing III-V compound semiconductor optical and radio-frequency devices, including indium gallium arsenide photodiodes and avalanche photodiodes and single-mode VCSELs for atomic clock and quantum sensing applications.

Paisley · Scotland · UK headquartered

Paisley manufacturer of optical in-situ process monitoring and control instruments, including etch depth monitors and wafer vision systems used in semiconductor and thin-film production.

Edinburgh · Scotland · UK headquartered

Heriot-Watt-linked company building chip-based photonic entanglement and quantum networking hardware.

London · London · UK headquartered

UCL spin-out developing CMOS-compatible silicon-oxide RRAM memory devices for chip integration.

Bathgate · Scotland · UK site of an international group · part of Ion Beam Services (France)

Bathgate provider of ion implanter refurbishment, spares and field service to semiconductor fabs and foundries.

Cardiff · Wales · UK headquartered

Cardiff-headquartered supplier of compound semiconductor epitaxial wafers for wireless, photonics, display and power applications, with manufacturing in the UK and overseas.

Birmingham · West Midlands · UK headquartered

Birmingham materials company developing photoresists and hard masks for extreme ultraviolet and electron-beam semiconductor lithography.

London · London · UK headquartered

Designs and manufactures CMOS X-ray detectors and wafer-scale image sensors.

Hartlepool · North East · UK headquartered

Hartlepool manufacturer of high-reliability and radiation-hardened optocouplers, optoswitches and solid-state relays for industrial, aerospace and defence applications.

St Albans · East of England · UK headquartered

Hertfordshire laboratory providing electron microscopy, X-ray and chemical analysis-based failure investigation for electronic assemblies and semiconductor devices.

Hungerford · South East · UK headquartered

Manufactures direct-contact integrated circuit test sockets for evaluation and failure analysis.

Marlborough · South West · UK site of an international group · part of John P Kummer Group

Marlborough distributor of semiconductor metrology, inspection, test, failure-analysis and calibration-standard equipment, part of the John P Kummer group.

Glasgow · Scotland · UK headquartered

Glasgow company providing commercial access to university nanofabrication facilities, including electron-beam lithography and device processing services.

Glasgow · Scotland · UK headquartered

University of Glasgow spin-out designing cryogenic analogue and mixed-signal integrated circuits on standard CMOS processes, together with control and readout electronics for quantum processors operating near absolute zero.

Bristol · South West · UK headquartered

Bristol spin-out building chip-scale quantum key distribution and quantum random number generator devices.

South East · UK headquartered

Fabless design of radar sensing and tuner integrated circuits.

Abingdon · South East · UK site of an international group · part of KIOXIA Holdings Corporation

UK design centre developing SoC controllers for KIOXIA flash memory and SSD products.

Newport · Wales · UK site of an international group · part of KLA Corporation

Newport-based manufacturer of wafer processing equipment for etch, deposition and surface preparation, operating as part of KLA Corporation.

Dalgety Bay · Scotland · UK site of an international group · part of Kopin Corporation (United States)

Dalgety Bay facility designing and manufacturing high-resolution ferroelectric liquid crystal on silicon microdisplays and spatial light modulators for defence, medical and industrial imaging.

Sedgefield · North East · UK headquartered

County Durham manufacturer of cadmium zinc telluride semiconductor radiation detector crystals and modules for medical imaging, nuclear security screening and industrial measurement.

Cardiff · Wales · UK headquartered

Cardiff company developing device simulation software for wide bandgap semiconductor design, covering silicon carbide and gallium nitride power devices, compound semiconductor RF devices and optoelectronics.

Cardiff · Wales · UK headquartered

Fabless company developing proprietary cubic gallium nitride (GaN) semiconductor technology for LED and microLED applications, working with epitaxy and fabrication partners rather than operating its own fab.

Chelmsford · East of England · UK site of an international group

UK technical sales operation for optoelectronic and laser diode components.

Bath · South West · UK headquartered

University of Bath spin-out developing electrodeposition processes for scalable two-dimensional semiconductor materials.

Southampton · South East · UK site of an international group · part of Leonardo S.p.A.

Southampton facility growing mercury cadmium telluride material and manufacturing cooled infrared detector and avalanche photodiode arrays for defence, space and scientific instruments, part of Leonardo's electronics business.

Taunton · South West · UK headquartered

Taunton manufacturer of precision ceramic and metal carriers, submounts and hermetic packages used to mount and package semiconductor, laser and photonic devices.

Hemel Hempstead · East of England · UK headquartered · part of Castello Holding Company

Operates a semiconductor device programming centre with automated high-volume IC programming capacity.

Bristol · South West · UK headquartered

Bristol company spun out of University of Bristol photonics research, developing detachable fibre-to-chip interconnects that reduce coupling loss when packaging silicon photonic and quantum computing chips.

Oxford · South East · UK headquartered

Develops miniaturised compound-semiconductor photovoltaic and photonic components, with Innovate UK-funded UK packaging capability work.

Guildford · South East · UK headquartered

UK fabless company designing field-programmable RF transceiver chipsets.

Sheffield · Yorkshire · UK headquartered

Sheffield semiconductor sales and design-in representative for named semiconductor manufacturer lines into instrumentation, medical and motion control customers.

Basingstoke · South East · UK headquartered

RF and microwave component design, manufacture and semiconductor distribution.

Newcastle upon Tyne · North East · UK headquartered

Newcastle spin-out developing logic-based (Tsetlin machine) AI accelerator hardware as an alternative processor architecture.

Cricklade · South West · UK headquartered

Wiltshire designer and manufacturer of precision wafer dicing saws and air bearing spindles, also providing subcontract dicing services to semiconductor customers.

Old Kilpatrick · Scotland · UK headquartered · part of AMETEK

Clydebank-area manufacturer of precision lapping, polishing, chemical-mechanical polishing, cutting and bonding equipment used in semiconductor and compound semiconductor wafer processing. Unrelated to the computer peripherals company of the same name.

London · London · UK headquartered

Imperial College spin-off developing non-volatile PMRAM memory chip technology.

Towcester · East Midlands · UK site of an international group · part of Lumentum Holdings

Operator of the Caswell indium phosphide wafer fabrication site in Northamptonshire, producing photonic chips and optical modulators for optical networking; the UK arm of a US-headquartered group.

Farnham · South East · UK headquartered

Vibration isolation engineering for semiconductor fabrication facilities and tools.

Cannock · West Midlands · UK headquartered

Supplier and agent for semiconductor and thin-film process equipment, service and consumables.

Chertsey · South East · UK headquartered

Stocking distributor of RF and MMIC semiconductor devices.

Livingston · Scotland · UK headquartered

Scottish supplier of etch, deposition and vapour-release equipment for semiconductor and MEMS fabs.

Tamworth · West Midlands · UK headquartered

Specialist distributor of semiconductor manufacturing, test and failure-analysis equipment with applications support.

Glasgow · Scotland · UK headquartered

Glasgow company developing metasurface colour-filter technology applied to CMOS image sensor chips, intended to replace conventional filter arrays and improve sensitivity.

Wilton · South West · UK headquartered

RF, microwave and mmWave semiconductor technical sales and distribution.

Maidenhead · South East · UK headquartered

Supplies sputtering target materials and thin-film process consumables to UK and Irish semiconductor and coating users.

Caldicot · Wales · UK site of an international group · part of Microchip Technology Incorporated (United States)

United Kingdom operation of Microchip Technology, whose Caldicot site provides semiconductor microelectronic services including design, assembly and test, alongside further English design offices.

Cardiff · Wales · UK site of an international group · part of MicroLink Devices, Inc.

Port Talbot manufacturer of III-V epitaxial lift-off solar cell technology for satellite and aircraft power systems, serving UK and European demand for lightweight high specific power arrays.

Lancing · South East · UK headquartered

Lancing manufacturer of silicon radiation detectors and photodiodes, designing and fabricating custom silicon sensor devices for physics research, space, medical and industrial detection.

Norwich · East of England · UK site of an international group · part of Micross Components (US)

UK bare die and wafer distribution with dicing, bumping and package modification services.

Deeside · Wales · UK headquartered

MEMS chip-based point-of-care diagnostic devices.

Bristol · South West · UK headquartered

Design, manufacture and test of solid-state RF and microwave power amplifiers.

South West · UK site of an international group

Franchised RF and microwave semiconductor component distributor.

Leicester · East Midlands · UK site of an international group · part of AMETEK

AMETEK brand, based in Leicester, designing and manufacturing solid-state high-power RF and microwave amplifiers.

London · London · UK headquartered

Imperial College London spin-out designing ultra-low-power application-specific integrated circuits for implantable neural devices, supplying custom silicon to medical device developers.

Annalong · Northern Ireland · UK headquartered

Northern Ireland fabless company designing gallium arsenide and gallium nitride monolithic microwave integrated circuits and discrete radio-frequency devices for millimetre-wave applications using external foundries.

Knutsford · North West · UK headquartered · part of Judges Scientific plc

Cheshire manufacturer of compact deposition, etch and anneal thin-film systems used in semiconductor, graphene and two-dimensional materials research and pilot production; part of listed group Judges Scientific.

Newcastle upon Tyne · North East · UK headquartered

Newcastle fabricator of quartz glass and technical ceramic components and thermocouples for semiconductor, CVD and MOCVD process tools.

Manchester · North West · UK headquartered

Gas sensor instruments built on semiconductor sensing arrays.

Runcorn · North West · UK headquartered

Runcorn manufacturer of cadmium-free quantum dot nanomaterials, including infrared-absorbing materials used in image sensors, photodetectors and displays. Listed on the London Stock Exchange.

Bristol · South West · UK headquartered

Bristol service provider offering semiconductor failure analysis using focused ion beam, scanning and transmission electron microscopy, device decapsulation and circuit edit work.

Edinburgh · Scotland · UK headquartered

Fabless developer of nano-MEMS structures built inside standard CMOS layers.

Durham · North East · UK headquartered

Durham University spin-out designing and fabricating silicon carbide devices for high-temperature and high-radiation extreme-environment electronics in aerospace, defence and energy applications, alongside specialist wide-bandgap training.

Glasgow · Scotland · UK headquartered

Glasgow university spin-out developing tunnelling magnetoresistance magnetic sensor integrated circuits and custom application-specific integrated circuits for wearable and extended-reality products.

Stockport · North West · UK site of an international group · part of Nexperia B.V. (Netherlands)

Semiconductor manufacturer of discrete devices and power components with UK operations including a Stockport site supporting its wafer and device business.

Winchester · South East · UK headquartered

Winchester company providing specialist physical design services for integrated circuits, including floorplanning, place and route and layout implementation for digital blocks, IP and full systems on chip at advanced nodes.

York · Yorkshire · UK headquartered

University of York spin-out developing circuit optimisation software used by chip designers to generate optimised analogue, standard-cell and memory circuits automatically.

Newtown · Wales · UK site of an international group · part of Nidec

Newtown designer and manufacturer of variable-speed motor drives built around power semiconductor modules, formerly Control Techniques.

Immingham · Yorkshire · UK site of an international group · part of Nippon Sanso Holdings Corporation

Supplies electronic specialty gases and on-site gas management services to semiconductor manufacturers.

Aylesbury · South East · UK site of an international group · part of Nordson Corporation

UK operation (formerly Dage) manufacturing X-ray, acoustic and bond-test inspection systems for semiconductor packaging.

Stockport · North West · UK headquartered

Designs, manufactures and installs cleanroom systems, including semiconductor wafer fab cleanroom projects.

Glasgow · Scotland · UK headquartered

Precision laser and photonics instruments incorporating semiconductor light sources.

Cardiff · Wales · UK headquartered

Cardiff company working on chip and system co-design for edge artificial intelligence sensing and control applications.

Wishaw · Scotland · UK headquartered

East Kilbride business specialising in refurbishment, lens optimisation, installation, decommissioning, resale and training for semiconductor lithography steppers and scanners, serving fabs in the United Kingdom and internationally.

Cambridge · East of England · UK headquartered

Cambridge company building photonic integrated circuit-based hardware, including optical switching and photon detection, to connect quantum processors into networks.

East Kilbride · Scotland · UK site of an international group · part of NXP Semiconductors N.V. (Netherlands)

United Kingdom operation of NXP Semiconductors, including an established technology centre at East Kilbride covering automotive and internet-of-things semiconductor product development and research.

Newton Aycliffe · North East · UK headquartered

County Durham compound semiconductor foundry fabricating gallium arsenide, gallium nitride on silicon carbide and indium phosphide wafers for radio frequency, defence, telecoms and space customers.

London · London · UK headquartered

London company designing artificial intelligence inference accelerator chips and systems that split token generation across purpose-built silicon, with additional engineering activity in Bristol.

South East · UK headquartered

Supplies thin-film thickness, profilometry and sheet resistance metrology instruments.

South East · UK headquartered

Custom defence and aerospace power electronics design and build.

Bracknell · South East · UK site of an international group

onsemi UK design centre working on image sensor and sensing chip development.

Leeds · Yorkshire · UK headquartered

Leeds company developing silicon photonic processors intended to accelerate encryption workloads using optical rather than purely electronic computation.

Ely · East of England · UK headquartered

Supplies process gas cabinets, ultrapure liquid handling and vacuum components to semiconductor and advanced materials manufacturers.

St Ives · East of England · UK headquartered · part of Bergman & Beving

Designs and manufactures ultra-high-purity gas and chemical delivery systems for semiconductor and compound semiconductor fabs.

St Neots · East of England · UK site of an international group · part of OSI Electronics, Inc. (United States)

Electronics manufacturing and microelectronics assembly and test operation of US-owned OSI Electronics; not a semiconductor manufacturer.

Abingdon · South East · UK headquartered

UK instrumentation group whose plasma technology business supplies etch and deposition equipment used in compound semiconductor and research fabrication.

Oxford · South East · UK site of an international group · part of IonQ

Oxford company designing trapped-ion quantum processor chips using electronic qubit control implemented in standard semiconductor fabrication processes; acquired by IonQ in 2025 with Oxford operations retained.

Didcot · South East · UK headquartered

Laser micromachining company producing probe-card guide plates used in semiconductor wafer test.

Reading · South East · UK headquartered

Thames Valley company designing and fabricating superconducting qubit processor chips, including wafer-scale packaging of large quantum processor dies.

Somersham · East of England · UK headquartered

Cambridgeshire company manufacturing graphene-based electronic devices and sensors using semiconductor-compatible production methods.

Walsall · West Midlands · UK headquartered

Acid exhaust ductwork and gas scrubber systems for semiconductor wafer fabrication.

Sandycroft · Wales · UK headquartered

Flintshire manufacturer of high-purity atomic layer and chemical vapour deposition precursors, with precursor purification and specialist packaging services for the semiconductor supply chain.

Sheffield · Yorkshire · UK headquartered

Sheffield company designing and manufacturing antimonide infrared avalanche photodiode sensor chips with high sensitivity, used in lidar, fibre-optic test and industrial sensing; a University of Sheffield spin-out.

Lancaster · North West · UK headquartered

Lancaster University spin-out developing compact gallium arsenide quantum-ring single-photon light-emitting devices capable of room-temperature operation for quantum key distribution over standard telecommunications fibre.

Edinburgh · Scotland · UK headquartered

Edinburgh company designing and supplying single-photon avalanche diode cameras and custom sensor systems for photonics research, quantum optics and life science instrumentation.

South East · UK headquartered

Distributor of photonic and optoelectronic components and semiconductor light sources.

South East · UK headquartered

UK distributor of diode laser and compound semiconductor products.

Bridgend · Wales · UK site of an international group · part of Photronics Inc.

Operates a UK photomask manufacturing plant supplying masks used in wafer fabrication.

Manchester · North West · UK headquartered

University of Manchester spin-out developing a near-infrared optical sensor built using silicon chip manufacturing and MEMS techniques to identify materials by their optical signature for consumer and industrial use.

Tamworth · West Midlands · UK headquartered

Tamworth supplier of silicon, sapphire, glass and compound semiconductor wafers with associated coating, polishing, etching and dicing services, within a wider advanced materials business.

Sheffield · Yorkshire · UK headquartered

University of Sheffield spin-out developing a fluidic self-assembly process for placing micro-LED die at volume, addressing the transfer step in micro-LED display manufacturing.

Derby · East Midlands · UK headquartered

Derby designer and manufacturer of passive RF and microwave components for industrial, medical and defence electronics.

Bristol · South West · UK headquartered

University of Bristol spin-out developing light-controlled radio-frequency integrated-circuit switching technology.

Glossop · East Midlands · UK headquartered

Derbyshire chemical manufacturer producing high-purity acids, etches, cleaners and developers for electronics manufacturing, packaged in a dedicated cleanroom facility.

Plymouth · South West · UK headquartered · part of Haylo Labs

Plymouth manufacturer developing gallium nitride micro-LED displays on silicon wafers, operating its own fabrication facility for augmented reality applications.

Great Chesterford · East of England · UK headquartered

RF, radar and sensing hardware design consultancy with semiconductor-level design work.

Leigh · North West · UK headquartered

Distributor of optoelectronic, LED and power semiconductor components with UK stockholding and technical support.

Malvern · West Midlands · UK headquartered

Malvern supplier of particle counters, cleanroom monitoring, ionisation and HEPA testing with an in-house UKAS calibration laboratory serving semiconductor sites.

Cambridge · East of England · UK headquartered

Cambridge company developing porous gallium nitride materials and micro-LED display devices, supplying epitaxial wafers and display engines.

Sedgefield · North East · UK headquartered

County Durham manufacturer producing ultra-thin flexible integrated circuits on its own fabrication lines, aimed at high-volume low-cost identification and sensing uses.

Wymondham · East of England · UK headquartered

Supplies and services mass flow and pressure control instrumentation for semiconductor fabs.

Livingston · Scotland · UK headquartered

Scottish fabless photonics company designing photodetectors, LEDs and laser diodes from ultraviolet to infrared wavelengths, using external foundries for volume production.

Harlow · East of England · UK headquartered

Semiconductor obsolescence management and authentication testing laboratory within a distributor.

Glasgow · Scotland · UK headquartered

Glasgow company designing, simulating and fabricating advanced semiconductor wafer- and package-test hardware, including probe cards and automated test equipment interfaces, for communications, artificial-intelligence processor and automotive chip customers.

Reading · South East · UK headquartered

Supplies semiconductor production test sockets and ATE interconnect.

Swindon · South West · UK headquartered

Swindon manufacturer of custom micro-LED and monolithic LED devices from ultraviolet to infrared wavelengths, with in-house wafer processing and cleanroom facilities.

Dunstable · East of England · UK headquartered

Dunstable manufacturer of thermal management hardware and power semiconductor stack assemblies, including bonded-fin and liquid-cooled heatsinks and insulated-gate bipolar transistor driver integration, for renewable energy, traction and industrial drive customers.

Plymouth · South West · UK headquartered

Develops power-conversion integrated circuits and reference designs for efficient power electronics.

Salfords · South East · UK headquartered

Designs, installs and services ultra-high-purity water and process pipework systems for semiconductor manufacturing.

Thame · South East · UK site of an international group · part of Veolia

Supplies ultrapure water purification systems engineered for semiconductor and microelectronics fabrication.

Sheffield · Yorkshire · UK headquartered

Opto-electronic pyrometry and hyperspectral imaging instruments.

South East · UK headquartered

GaN-based intelligent power modules integrating power semiconductor devices.

Cambridge · East of England · UK site of an international group · part of Qualcomm Incorporated (United States)

Qualcomm's UK semiconductor operations, including the former Alphawave Semi business acquired in December 2025. The Cambridge site supports connectivity and processor engineering, while the ex-Alphawave teams contribute high-speed wired connectivity IP, chiplets and custom silicon work formerly run from London.

Glasgow · Scotland · UK headquartered

Glasgow company designing, fabricating and testing niobium-based superconducting quantum processors, resonators and sensors, working from the James Watt Nanofabrication Centre; a University of Glasgow spin-out.

Oxford · South East · UK headquartered

Oxford spin-out productising photonic quantum random number generator hardware based on integrated optics.

London · London · UK headquartered

London company developing quantum computing processors built on standard silicon manufacturing processes rather than bespoke fabrication routes.

Warrington · North West · UK headquartered

Warrington nanomaterials company developing infrared and short-wave infrared quantum dot materials for photodetectors and image sensors used in mobile, automotive and healthcare applications.

Kidlington · South East · UK headquartered

Developing quantum-dot CMOS short-wave infrared image sensor manufacturing in the UK under an Innovate UK semiconductor scale-up award.

Braintree · East of England · UK headquartered

Fabricates high-purity fused quartz and silica components for semiconductor manufacturing processes.

East Kilbride · Scotland · UK headquartered

Fabricates quartz components and quartzware consumables for semiconductor furnace and etch tools.

Lancaster · North West · UK headquartered

Company commercialising ULTRARAM, a compound semiconductor memory using III-V resonant tunnelling to combine non-volatile storage with fast access, invented at Lancaster University where its research activity is based.

Bristol · South West · UK headquartered

Bristol fabless company developing processor and baseband system-on-chip silicon and software platforms for 4G/5G/6G radio access network equipment.

Larne · Northern Ireland · UK headquartered

Larne designer and manufacturer of high-performance imaging cameras built on silicon and compound semiconductor sensors, including electron-multiplying CCD, short-wave infrared and x-ray detection technologies.

Cambridge · East of England · UK headquartered

Cambridge computer company that designs its own microcontroller silicon alongside its single-board computers, giving it in-house chip design capability.

High Wycombe · South East · UK headquartered

High Wycombe manufacturer of silicon drift and silicon semiconductor X-ray detectors and detector modules for electron microscopy, analytical instrumentation and synchrotron applications.

South East · UK headquartered

Franchised distribution with dedicated semiconductor obsolescence management.

Milton Park · South East · UK headquartered

Oxfordshire company developing licensable RISC-V based processor IP aimed at energy-efficient edge artificial intelligence workloads, working with UK design partners and a member of RISC-V International.

Leicester · East Midlands · UK headquartered

Design and manufacture of laser and LiDAR sensor systems.

Manchester · North West · UK headquartered

Manchester designer and installer of ultra-high-purity gas, liquid and vacuum systems for semiconductor fabs, including orbital welding and maintenance.

Dursley · South West · UK headquartered

Gloucestershire test laboratory providing semiconductor qualification, reliability and burn-in testing and failure analysis, and building its own burn-in and life-test systems.

Birmingham · West Midlands · UK headquartered

Birmingham company offering configurable digital IP blocks and system-on-chip design services for connectivity and domain-specific processors.

Bourne End · South East · UK site of an international group · part of Renesas Electronics Corporation (Japan)

United Kingdom design operation of Renesas Electronics, based at Bourne End with further engineering sites, developing power, analogue, mixed-signal and ASIC semiconductor designs.

Coatbridge · Scotland · UK headquartered

Scottish company providing semiconductor component recovery, reballing, testing and supply-chain services to electronics manufacturers and fabs.

Lincoln · East Midlands · UK site of an international group · part of RFMW

UK operation distributing RF, microwave and power semiconductor devices.

Edinburgh · Scotland · UK headquartered

Fabless company referencing neuromorphic artificial intelligence chip design, registered in Edinburgh with recruitment activity in Cambridge.

Sheffield · Yorkshire · UK headquartered

Sheffield quantum sensing company developing chip-scale magnetometers that combine nitrogen-vacancy diamond centres with silicon photonics through standard semiconductor fabrication routes for room-temperature clinical sensing.

St Neots · East of England · UK site of an international group · part of Rochester Electronics, LLC

Authorised end-of-life semiconductor distribution and licensed re-manufacture, UK site.

Corby · East Midlands · UK headquartered

Broadline authorised distributor with semiconductor franchise agreements.

Bolton · North West · UK site of an international group

UK operation of pan-European semiconductor and electronics distributor.

Oxford · South East · UK headquartered

Oxford company developing photonic processing chips that combine optical and electronic layers for high-throughput computing workloads.

Antrim · Northern Ireland · UK site of an international group · part of Sensata Technologies

Antrim designer and manufacturer of tyre-pressure monitoring and automotive sensor electronics, with in-house sensor and electronics design activity, part of Sensata Technologies.

Sheffield · Yorkshire · UK headquartered

Sheffield company designing memory-safe microcontrollers and processor IP based on the CHERIoT architecture for security-critical embedded systems, with additional engineering staff in Cambridge.

Finchampstead · South East · UK headquartered · part of SDI Group plc

Berkshire manufacturer of physical vapour deposition equipment, including sputtering, electron-beam evaporation and ion beam milling systems used in semiconductor and thin-film device production.

Langbank · Scotland · UK headquartered

Supplies vacuum deposition and etch equipment, spares and consumables to silicon, MEMS and compound semiconductor manufacturers.

Londonderry · Northern Ireland · UK site of an international group · part of Seagate Technology Holdings plc (United States/Ireland)

Data storage manufacturer operating a wafer fabrication plant at Springtown, Northern Ireland, producing recording head components for hard disk drives.

London · London · UK headquartered

London company designing secure semiconductor IP and system-on-chip devices, including a CHERI-based trusted platform module taped out on a 22nm process, aimed at post-quantum cryptography.

London · London · UK site of an international group · part of SEEQC Inc.

London design and engineering operation of SEEQC Inc., developing superconducting single flux quantum digital chips used for control and readout of quantum processors. Chip fabrication takes place at the group's US facility.

Livingston · Scotland · UK site of an international group · part of Shin-Etsu Handotai (Shin-Etsu Chemical)

Manufactures polished and epitaxial silicon wafers at Livingston for semiconductor device fabrication.

Glenrothes · Scotland · UK headquartered

Glenrothes silicon wafer foundry offering specialist process development, discrete device and MEMS fabrication on small and medium wafer sizes.

Bedlington · North East · UK headquartered · part of TT Electronics plc

Northumberland manufacturer of high-reliability discrete semiconductors, power modules and radio-frequency transistors for aerospace, defence and industrial markets; a brand of TT Electronics.

Plymouth · South West · UK headquartered

Repairs and refurbishes semiconductor process equipment including sputter and ion-implant systems, with precision parts manufacture.

Bath · South West · UK headquartered

Supplies and services ion implanter sub-assemblies and spares to semiconductor manufacturers.

Tharston · East of England · UK headquartered

Designs and manufactures high-temperature heaters, furnaces and manipulators for semiconductor processing.

London · London · UK headquartered

UK-registered fabless developer of power-line communication and smart-grid ICs.

Cheltenham · South West · UK headquartered

UK representative for semiconductor metrology, wafer-handling and thin-film process tools.

Glasgow · Scotland · UK headquartered

Glasgow company developing and licensing CMOS device and technology IP, transistor simulation modules and cryogenic compact models, alongside TCAD consultancy for semiconductor manufacturers.

South East · UK headquartered

Power electronics converter design using SiC and IGBT devices.

Belfast · Northern Ireland · UK headquartered

Fibre-optic sensor interrogation systems using semiconductor photodetectors.

Egham · South East · UK headquartered

Manufactures X-ray detector modules, photodiode arrays and photomultiplier detection electronics.

West Midlands · UK headquartered

Thin-film pressure sensor manufacture using semiconductor-derived cleanroom processes.

Coventry · West Midlands · UK headquartered

Coventry designer and installer of ultra-high-purity gas distribution systems, including orbital welding and helium leak testing for semiconductor manufacturing.

Pitstone · South East · UK headquartered · part of Specialised Imaging Limited

Buckinghamshire design unit creating custom CMOS image sensors and sensor packages for space, defence and industrial imaging; part of high-speed camera manufacturer Specialised Imaging.

Belfast · Northern Ireland · UK site of an international group

Mixed-signal, RF and analogue ASIC design services and custom ASIC supply from a Belfast establishment.

Waterbeach · East of England · UK headquartered

University of Cambridge spin-out developing resonant MEMS accelerometers, gyroscopes and gravimeters for inertial navigation and gravity surveying, manufactured at its Cambridgeshire technology centre.

Plymouth · South West · UK headquartered · part of Collins Aerospace / Sumitomo Precision Products joint venture

Plymouth manufacturer of MEMS gyroscopes, accelerometers and inertial measurement units, operating its own MEMS fabrication facility; a joint venture between Collins Aerospace and Sumitomo Precision Products.

Bristol · South West · UK headquartered

Bristol company using custom photonic integrated circuits to miniaturise optical coherence tomography, building portable eye-scanning devices for detecting retinal disease.

Southam · West Midlands · UK headquartered

Southam manufacturer of ultra-thin silicon, silicon nitride and silicon carbide membranes and substrates produced in its own cleanroom for semiconductor, x-ray and electron microscopy applications.

Cambridge · East of England · UK headquartered

Cambridge design house developing FPGA and ASIC intellectual property for phased-array, radar, sonar and audio processing, alongside board and embedded software work.

Edinburgh · Scotland · UK headquartered

Edinburgh company developing single-photon avalanche diode image sensors with on-chip processing for scientific, medical and industrial imaging; spun out of the University of Edinburgh.

Wimborne · South West · UK headquartered

Dorset business supplying wire and die bonding, inspection and test equipment to the semiconductor and microelectronics industries, with in-house wirebonding consultancy and engineering support delivered on customer and partner sites.

Blantyre · Scotland · UK headquartered · part of Sivers Semiconductors AB (Sweden)

Blantyre III-V compound semiconductor laser and photonic chip maker and foundry, part of Sivers Semiconductors; formerly CST Global.

Leeds · Yorkshire · UK headquartered

Embedded and FPGA design for radar signal chains and RF data conversion.

Manchester · North West · UK headquartered

Manchester materials company developing organic semiconductor inks and processes for thin-film transistors used in displays and flexible electronics.

Edinburgh · Scotland · UK headquartered

Edinburgh company developing radio-frequency MEMS components and beam-steering antenna systems for satellite communication terminals.

Redditch · West Midlands · UK headquartered

Franchised semiconductor distributor providing design-in and value-added engineering support, part of Solid State plc.

Cardiff · Wales · UK headquartered

Cardiff company developing returnable satellite platforms intended to manufacture semiconductor materials in orbit for terrestrial power and radio-frequency devices.

Cranfield · East of England · UK headquartered

Builds microwave hybrid modules using bare-die handling and fine wire bonding on alumina substrates.

Great Yarmouth · East of England · UK site of an international group · part of Spectrum Control Inc. (HEICO Corporation)

Manufactures thick-film hybrid microcircuits, chip-and-wire assemblies and hermetic power modules at Great Yarmouth.

London · London · UK headquartered

Manufactures CMOS wafer-scale X-ray image sensor detectors.

Livingston · Scotland · UK headquartered

Refurbishes and supports photolithography steppers and wafer handling tools for fabs.

Edinburgh · Scotland · UK site of an international group · part of STMicroelectronics N.V.

Edinburgh design centre of STMicroelectronics, developing CMOS imaging, photonic sensing and meta-optics sensor technology as part of the group global imaging division.

Sheffield · Yorkshire · UK headquartered

Sheffield-based semiconductor IP company developing low-power embedded memory designs for power-constrained and always-on chip applications.

Swindon · South West · UK headquartered · part of Sensata Technologies

Swindon design house producing custom mixed-signal ASICs, principally sensor interface and signal-conditioning chips for industrial and automotive customers.

Reading · South East · UK site of an international group · part of Synopsys, Inc. (United States)

United Kingdom operation of Synopsys, supplying silicon-proven semiconductor intellectual property, electronic design automation tools and chip design software used by semiconductor companies worldwide, with engineering activity in the Thames Valley.

Northampton · East Midlands · UK headquartered

Provides high-volume semiconductor device programming services using silicon-manufacturer-approved algorithms.

South East · UK headquartered

Turnkey cleanroom and controlled environment delivery for electronics and quantum manufacturing.

London · London · UK headquartered

London company building a reasoning-based artificial-intelligence layer alongside established electronic design automation tools to automate physical-design decisions such as timing closure and shorten RTL-to-GDSII cycles.

Leicester · East Midlands · UK site of an international group · part of AMETEK, Inc.

Surface and form metrology instruments used in semiconductor manufacturing.

Chelmsford · East of England · UK site of an international group · part of Teledyne Technologies Incorporated (United States)

Chelmsford designer and manufacturer of image sensors, space-qualified processors and specialist semiconductor devices for scientific, space and industrial markets.

South East · UK site of an international group

UK RF and microwave design and manufacture for radar and electronic warfare.

Telford · West Midlands · UK headquartered · part of Alpha 3 Manufacturing

Telford precision machining and UHV cleaning division of Alpha 3 Manufacturing, supplying machined components and electromechanical sub-assemblies to semiconductor equipment makers.

Harwell · South East · UK headquartered

Company designing and supplying monolithic microwave integrated circuits and modules for radar, space and millimetre-wave instrumentation customers.

Cambridge · East of England · UK headquartered

Cambridge manufacturer of terahertz spectroscopy and imaging instruments used for non-destructive inspection and characterisation of semiconductor devices, wafers and coatings; spun out of a Toshiba research laboratory.

Basingstoke · South East · UK headquartered

Manufactures and supplies high-purity sputtering targets and evaporation materials for thin-film and semiconductor deposition.

Basingstoke · South East · UK headquartered

Basingstoke design consultancy working on analogue, mixed-signal and radio frequency integrated circuits and licensable silicon-proven blocks for satellite and communications applications.

Swansea · Wales · UK headquartered

Welsh software company providing design automation tools that help chip developers migrate analogue and mixed-signal designs between manufacturing processes.

Loughborough · East Midlands · UK headquartered

Designs and manufactures custom laser diode modules and optoelectronic assemblies.

Malton · Yorkshire · UK headquartered

Independent stocking distributor of semiconductors and integrated circuits.

Stanley · North East · UK site of an international group · part of Tosoh Corporation (Japan)

Stanley, County Durham facility manufacturing ultra-pure fused quartz components and glassware used in semiconductor integrated circuit processing equipment.

Cardiff · Wales · UK headquartered

Welsh company developing power-management integrated circuits for piezoelectric energy harvesting.

Coleshill · West Midlands · UK headquartered

Privately owned power semiconductor manufacturer near Birmingham operating an in-house wafer fabrication facility producing IGBTs, MOSFETs, diodes and thyristors, with UK diffusion, lithography and dicing.

Rochdale · North West · UK headquartered · part of TT Electronics

Rochdale power electronics design and manufacturing site of TT Electronics, producing custom power converters, inverters and power modules for aerospace and defence electrification.

High Wycombe · South East · UK site of an international group

Authorised distributor of discrete semiconductors and passive components with UK sites.

North East · UK headquartered

Power electronics systems for rail, charging and grid applications.

Honiton · South West · UK headquartered · part of The Eurotech Group plc

Hermetic glass-to-metal sealed microelectronic packages and RF housings.

Ringmer · South East · UK headquartered

Designs and manufactures precision sample manipulation and heating products for ultra-high-vacuum and semiconductor process systems.

Brownhills · West Midlands · UK headquartered

West Midlands designer and builder of ultrasonic wet bench cleaning and dip coating systems, including an automated wafer cleaning system developed for semiconductor customers alongside optics and aerospace work.

Haywards Heath · South East · UK headquartered

Sussex company microfabricating silicon ion-trap chips and control integrated circuits for modular trapped-ion quantum processors; a University of Sussex spin-out.

Hailsham · South East · UK headquartered

East Sussex manufacturer of ultra-high-vacuum chambers, load lock and transfer modules and electromechanical assemblies built to industry standards in a cleanroom, supplied to wafer fabrication equipment builders.

London · London · UK site of an international group

Fabless design company developing reversible-computing processors that recover electrical energy normally lost as heat, aiming to reduce the power consumption of AI computation. Its first test chip was fabricated on a 22nm process.

Alexandria · Scotland · UK headquartered

West Dunbartonshire manufacturer of wire-saw wafer-slicing consumables, wire guides and wafer-handling and cleanroom equipment for silicon wafer producers.

Brynmawr · Wales · UK headquartered

Custom synthesis and toll manufacture of photosensitive and specialty fine chemicals, including lithographic chemistries.

Glasgow · Scotland · UK headquartered

Glasgow company developing photonic crystal surface-emitting laser technology for optical communications, sensing and industrial applications.

South East · UK site of an international group

Ultrapure water systems for semiconductor wafer processing.

Winnersh · South East · UK site of an international group · part of Veriest Solutions (Israel)

Winnersh design centre of the Veriest engineering services group, providing ASIC and FPGA design and verification services extending into physical design and design-for-test for semiconductor and systems customers across the United Kingdom and Europe.

Sunderland · North East · UK headquartered

Sunderland company designing and supplying standard and custom gallium arsenide and gallium nitride MMICs covering roughly 1 to 150GHz for commercial, defence and space customers.

Newport · Wales · UK site of an international group · part of Vishay Intertechnology, Inc. (United States)

Newport wafer fabrication plant operated by Vishay Intertechnology following its 2024 acquisition, producing power semiconductor and related silicon devices.

Milton Keynes · South East · UK headquartered · part of IQE plc

Milton Keynes manufacturer of III-V single-crystal substrates including gallium arsenide, indium phosphide and antimonides, operating as part of the IQE group.

Cambridge · East of England · UK headquartered

Cambridge company designing photonic integrated circuit building blocks and offering design services for quantum, sensing and communications applications.

Sandy · East of England · UK headquartered

Bedfordshire manufacturer of wafer probe stations and cantilever probe cards used for semiconductor wafer-level test and device characterisation, including MEMS, radio-frequency and power devices.

Didcot · South East · UK site of an international group · part of WIKA

Harwell developer and manufacturer of sapphire-based fibre-optic pressure and temperature sensor devices for gas turbines and aerospace; formerly Oxsensis, now part of the German WIKA group.

Cambridge · East of England · UK headquartered

Cambridge company developing silicon photonics-based quantum key distribution modules for integration into telecommunications networks.

Bristol · South West · UK headquartered

Bristol-based fabless semiconductor company designing programmable processors that combine audio, control and on-device AI functions in a single chip.

Newtownabbey · Northern Ireland · UK headquartered

Designs burn-in and production test systems for semiconductor laser and photonic devices.

Bristol · South West · UK headquartered

Fabless Bristol company developing photonic-enhanced MEMS inertial sensor chips.

Eastbourne · South East · UK headquartered

East Sussex design consultancy providing outsourced epitaxial, chip and packaging design for photonic, quantum and compound semiconductor devices, trading since 2003.