The Thames Valley semiconductor cluster

European office of Aldec, the FPGA and SoC verification-tools developer, in Windsor.

EDA / Design Automation · Windsor

UK operation of Aldec, Inc.

UK operations of Applied Materials in Reading and Daresbury, supporting semiconductor equipment and factory-automation R&D.

Semiconductor Equipment Services / Supply · Reading

UK operation of Applied Materials, Inc.

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.

Semiconductor Manufacturing Equipment · Didcot

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

EDA / Design Automation · Bracknell

UK operation of Cadence Design Systems, Inc. (United States)

Supplies standard and custom semiconductor test sockets and spring-contact probes from Flackwell Heath, Buckinghamshire.

Test / Probe Equipment · Flackwell Heath

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

Semiconductor Materials · Didcot

UK operation of De Beers Group

Supplies wafer grinding, lapping and polishing equipment and superabrasive consumables from Henley-on-Thames.

Semiconductor Manufacturing Equipment · Henley-on-Thames

UK operation of Engis Corporation

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

ASIC Design Services · Abingdon

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

Metrology / Inspection · Abingdon

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

Semiconductor Test · Hungerford

Designs and manufactures modular thin-film PVD deposition systems in High Wycombe.

Semiconductor Manufacturing Equipment · High Wycombe

Oxford supplier of indoor photovoltaic semiconductor components and light-powered IoT devices.

Photonic Semiconductor Devices · Oxford

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

Semiconductor Manufacturing Equipment · Abingdon

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.

Quantum Semiconductor Devices · Oxford

UK operation of IonQ

Didcot precision-laser systems company supplying micromachining and guide-plate drilling for semiconductor wafer-test probe cards.

Semiconductor Manufacturing Equipment · Didcot

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

Quantum Semiconductor Devices · Reading

Oxford company supplying post-quantum cryptographic hardware IP for ASIC and FPGA implementation.

Semiconductor IP · Oxford

Supplies semiconductor production test sockets and ATE interconnect.

Semiconductor Test · Reading

Develops photonics-powered probabilistic processors and integrated quantum photonic entropy sources in Oxford.

Quantum Semiconductor Devices · Oxford

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

Detectors / Imaging Devices · High Wycombe

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.

Semiconductor IP · Didcot

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

Analogue / Mixed-Signal Design · Bourne End

UK operation of Renesas Electronics Corporation (Japan)

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

Photonic Integrated Circuits · Oxford

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.

Vacuum / Process Equipment · Finchampstead

UK operation of SDI Group plc

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.

Semiconductor IP · Reading

UK operation of Synopsys, Inc. (United States)

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

RF / MMIC Design · Harwell

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

Analogue / Mixed-Signal Design · Basingstoke

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.

ASIC Design Services · Winnersh

UK operation of Veriest Solutions (Israel)

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.

MEMS / Sensors · Didcot

UK operation of WIKA