United Kingdom · Deep Tech Sovereignty

Semiconductor, Photonics & Quantum Ecosystem

A snapshot of the UK companies building the hardware underpinning AI, defence and critical infrastructure.
Updated 13 April 2026
213
Active companies
Total raised
University spinouts
7
Acquired / Foreign-owned

UK competes on design and IP, not volume — less than 1% of global semiconductor revenue.

US
48%
Taiwan
19%
South Korea
14%
EU
9%
China
7%
UK
<1%

Source: SIA 2025. UK strength is in chip design & IP (ARM), compound semiconductors, and quantum — not volume manufacturing.

Strong in design and specialist materials — structurally absent from fab, packaging, and equipment.

Chip Design & IPARM, Imagination, Graphcore, PragmaticStrong Compound SemiconductorsIQE, Paragraf, Porotech, CST GlobalStrong Quantum TechnologiesRiverlane, Oxford Quantum Circuits, QuantinuumStrong Photonics & OpticsRockley, Envisics, M Squared, LumaiStrong EDA & Design ToolsPhysicsX, Agile Analog, PulsicModerate Sensors & MEMSSorex Sensors, Cambridge Mechatronics, Photon ForceModerate Advanced PackagingLimited UK presenceGap Leading-Edge Fab (<7nm)No UK presence — depends on TSMC, Samsung, IntelGap Semiconductor EquipmentSPTS (Newport), Oxford Instruments — no ASML equivalentGap

UK has lost most of its flagship semiconductor companies to foreign buyers since 2016.

Oxford Ionics2025🇺🇸 IonQ
XMOS2024🇩🇪 Infineon
Lumenisity2022🇺🇸 Microsoft
Dialog Semiconductor2021🇯🇵 Renesas £4.9B
Newport Wafer Fab2021🇨🇳 Nexperia £63M
Sivers Photonics2021🇸🇪 Sivers Semiconductors
Imagination Technologies2017🇨🇳 Canyon Bridge £550M
ARM Holdings2016🇯🇵 SoftBank £24B
~£30B+ of UK semiconductor assets sold to foreign buyers since 2016. The National Security and Investment Act 2021 now screens such deals, but the pattern of acquisition continues.

Headline commitments total £6.5B+ across semiconductors, quantum, and compute — but deployed funding per year remains a fraction of EU, US, and Asian programmes.

National Semiconductor Strategy£1B / 10 yrMay 2023 — DSIT-led; design, compound semis, R&D
National Quantum Strategy£2.5B / 10 yrNov 2023 — includes 5 EPSRC hubs, Quantum Missions
ARIA£800M / 4 yrScalable compute, programmable matter, brain-inspired AI
UK Compute Roadmap£2B / 2025-30Jul 2025 — AIRR 20× expansion, Edinburgh EPCC supercomputer (£750M), Sovereign AI Unit
ChipStart UK£1.3M per cohortInnovate UK accelerator run by Silicon Catalyst UK
CSconnected / Strength in Places~£43MSouth Wales compound-semi cluster fund
CSA CatapultCore-fundedCompound-semi applications centre, Newport
EPSRC Prosperity PartnershipsPer-projectUniversity-industry R&D co-funding, incl. semis & photonics
Horizon Europe (rejoined 2024)£2.4B/yr accessUK firms now eligible for EU Chips JU, QuantERA, photonics
Henry Royce Institute£235M (capital)Advanced materials, incl. 2D, wide-bandgap, photonics
National Quantum Computing Centre£93MHarwell-based testbed for UK quantum hardware
Innovate UK grants (SMART etc.)Project-basedOpen competitions, ~25-70% match funding
R&D Tax CreditsHorizontalUp to 27p per £1 for loss-making R&D-intensive SMEs

Government commitments vs peers — UK is still roughly 6–7× behind the EU and US on semiconductor + compute public funding

US CHIPS Act
£41B
EU Chips Act
£37B
Japan
£20B
South Korea
£15B
UK*
£6.5B

Headline public commitments. US CHIPS & Science Act $52.7B (2022). EU Chips Act €43B (2023). Japan FY22-24 semi subsidies ¥3.9T. South Korea K-Chips Act direct subsidies + tax credits. *UK total £6.5B = National Semiconductor Strategy £1B + National Quantum Strategy £2.5B + UK Compute Roadmap £2B (Jul 2025) + ARIA £800M + smaller programmes. Figures converted at typical 2024 rates; excludes private co-investment and tax-credit headroom.

UKRI grants actually deployed into these 211 companies — source: Gateway to Research, all-time totals

Top UKRI recipients in this dataset — click to filter the table

Lead-project values only (collaborator roles counted in project count but not £ total to avoid double-attribution across consortia). Newer or purely private-funded firms have no GtR record. Innovate UK has funded more projects than EPSRC, but EPSRC projects are larger on average.

Companies by Category

University & Research Spinouts

Geographic Clusters — hover a bubble or row for detail, click to filter

Top 10 by Funding (£M)

Distressed   Acquired   Active

Most Active Investors — publicly-announced rounds into UK semi, photonics & quantum, Jan 2021–present companies covered ⓘ

UK VC   Patient / University   Sovereign   Corporate   Foreign

Company Formation by Year — the quantum wave and AI-chip surge, at a glance

CSV
Company City Category Description Origin Stage Raised Founded Status UKRI Grants