UK quantum companies and organisations

138 companies and start-ups, 28 universities, 15 labs and research organisations, 11 public bodies and funders and 12 investors. Most companies are in London (41), Cambridge (12), Glasgow (11); the commonest specialisms are quantum hardware, quantum software, quantum components.

213 organisations

4colors Research

Company · Cambridge

Optimisation solver company that won the Airbus and BMW quantum challenge and led an NQCC SparQ project on aircraft cargo loading with Airbus and ORCA.
Aegiq

Company · Sheffield

Sheffield builder of rack-mounted photonic quantum computers using quantum-dot photon sources, with a testbed running at the NQCC.
Airbus

Company · Filton

Airbus in UK quantum: end-user partner in NQCC SparQ projects on cargo loading and corrosion, Oxford Ionics fluid dynamics work and the QCi3 hub.
Algorithmiq UK

Company · London

London subsidiary of quantum algorithms firm Algorithmiq; led ADOPT-TEM, an NQCC project using tensor error mitigation for fraud detection.
Alter Technology TÜV Nord UK

Company · Livingston

Livingston photonics packaging and assembly site, formerly Optocap, working on quantum navigation optics and partner in QT Assemble and Pioneer Gravity.
Altran UK

Company · London

Engineering and R&D services company, now part of Capgemini Engineering, that was a partner in the Gravity Pioneer quantum sensing consortium.
Amadeus Capital Partners

Investor · Cambridge

Cambridge-founded venture firm backing UK quantum companies Riverlane and Nu Quantum, with Photonic and planqc also in its portfolio.
Amazon Web Services

Company · London

AWS brought OQC's Lucy processor to Amazon Braket's London region in 2022 and is a project partner in the Integrated Quantum Networks hub.
AmorphiQ

Start-up · Cambridge

Cambridge startup applying quantum reservoir computing on superconducting qubits to time-series forecasting, backed by an Innovate UK proof-of-concept grant.
Angoka

Start-up · Belfast

Belfast machine-to-machine security start-up that worked on extending quantum key security to mobile devices in BT's AIRQKD trial.
Applied Quantum Computing

Company · London

London firm applying quantum optimisation and machine learning to NHS problems such as theatre scheduling and intensive care risk prediction.
Aquark Technologies

Company · Southampton

Southampton spin-out building magnetic-field-free cold-atom clocks and sensors, including AQlock timing trialled with Royal Navy radars.
Arm

Company · Cambridge

Cambridge-based processor design company that was a partner in the NISQ.OS quantum operating system consortium.
Arqit

Company · London

London-based, Nasdaq-listed developer of quantum-safe symmetric key agreement software for telecoms, government and defence.
AstraZeneca

Company · Cambridge

AstraZeneca tests quantum chemistry for drug discovery, including a 2025 IonQ hybrid reaction simulation, and partners in the UK QCi3 computing hub.
Atlantic Microwave

Company · Braintree

Former Essex RF supplier, later part of ETL Systems, that sold cryogenic amplifiers and terminations for quantum cryostats; dissolved in 2022.
AWE

National lab · Aldermaston

AWE, the UK nuclear weapons establishment, is setting up a quantum centre of excellence led by Strathclyde for sensing and materials simulation.
BAE Systems Quantum

Company · London

BAE Systems' UK quantum activity: navigation flight trials at Boscombe Down, a sensing consortium with Birmingham, and a partner role in the QEPNT hub.
Barclays

Enterprise adopter · London

Barclays has explored quantum algorithms for securities settlement since 2017, with IBM and later Microsoft's optical computer.
Bay Photonics

Company · Paignton

Devon photonic packaging firm that led the PADME entangled-photon source project and partners on UK QKD work including AIRQKD and MARCONI.
BP

Company · London

Energy firm using quantum as an end user: IBM Quantum Network partner since 2021 and member of the AQuaSec and quantum data centre consortia.
British Geological Survey

Research organisation · Keyworth

BGS uses a new national network of quantum magnetometers to study space weather and partners in the QuSIT quantum sensing hub.
BT Group

Company · London

BT runs London's quantum-secured metro network trial with Toshiba and led the AIRQKD and QAssure QKD projects from its Adastral Park research campus.
Caledonian Photonics

Company · Glasgow

Scottish maker of compact solid-state lasers for quantum sensing and timing, working with Strathclyde under the Photonics and Quantum Accelerator.
Cambridge Innovation Capital

Investor · Cambridge

Cambridge venture investor and long-time Riverlane backer, which hired OQC founder Ilana Wisby as entrepreneur in residence in 2026.
Capgemini UK

Company · London

Capgemini's UK quantum work: its Quantum Lab for chemistry and post-quantum cryptography, and the NQCC QuantiCo corrosion project with Airbus.
Cardiff University

University · Cardiff

Cardiff brings compound semiconductor expertise to UK quantum, through QFoundry, the Q-BIOMED sensing hub and its joint venture with IQE.
Cavero Secure

Start-up · Leeds

Leeds University spin-out selling software post-quantum key exchange and continuous identity checks for SIMs, IoT devices and AI agents.
Cerca Magnetics

Company · Nottingham

Nottingham spin-out building wearable OPM-MEG brain scanners and shielded rooms, with Innovate UK and Ministry of Defence-funded projects.
Chase Research Cryogenics

Company · Sheffield

Sheffield maker of sealed sub-Kelvin sorption and dilution coolers used in quantum computing, sensing and QKD detector systems.
Citi

Company · London

Citi's UK quantum activity: partner to OQC in an NQCC SparQ proof of concept on quantum neural networks for derivative pricing.
Colt Technology Services

Company · London

Network operator that trialled QKD and post-quantum encryption from London to Slough and Frankfurt, then ran 800G quantum-safe traffic to New York.
Compound Semiconductor Applications Catapult

Research organisation · Newport

Newport semiconductor Catapult with quantum photonics capability; partner in the QFoundry quantum components foundry and BT's AIRQKD trial.
Compound Semiconductor Centre

Research organisation · Cardiff

IQE and Cardiff University joint venture that led QFoundry, a £4m consortium for an open-access UK foundry making VCSELs and single-photon devices.
Covesion

Company · Southampton

Southampton maker of PPLN wavelength-conversion crystals and locked lasers for cold-atom sensors, now the components brand of Hawthorn Photonics.
Craft Prospect

Company · Glasgow

Glasgow small-satellite engineer selling CubeSat QKD payloads and heading ESA's OPS-SAT VOLT quantum and optical communications mission.
Cranfield University

University · Cranfield

Postgraduate university in Bedfordshire that hosts a National Timing Centre Time and Frequency Innovation Node.
CryoCoax

Company · Chelmsford

Chelmsford supplier of cryogenic coaxial cables and connectors for dilution refrigerators, a division of Intelliconnect, now within Amphenol.
Crypta Labs

Company · London

London maker of quantum random number generators built from off-the-shelf optics, from a £200 USB device to 10 Gb/s OEM designs; IQN hub partner.
Crypto Quantique

Company · London

London chip security firm whose QDID circuit derives device identities and keys from quantum tunnelling variations in standard CMOS.
CSconnected

Ecosystem and network · Cardiff

South Wales compound semiconductor cluster organisation that was a partner in the QFoundry consortium.
Deloitte

Company · London

Company in London working on quantum software and finance, founded 1845.
Delta g

Company · Birmingham

Birmingham spin-out building field-ready quantum gravity gradiometers from stacked rubidium atom interferometers; raised a £4.6m seed round in 2025.
Delta Gold Technologies

Company · London

Aquis-listed London company funding Penn State and Toronto research into gold nanoclusters as qubits and licensing the resulting patents.
Department for Science, Innovation and Technology

Government · London

The government department behind the National Quantum Strategy, its five missions and the £2bn quantum package of March 2026, including ProQure.
Diamond Microwave

Company · Leeds

West Yorkshire maker of GaN microwave power amplifiers that supplied microwave subsystems to Universal Quantum's error-corrected processor consortium.
Digital Catapult

Research organisation · London

Runs the Quantum Technology Access Programme with the NQCC, giving firms such as NatWest hands-on quantum trials; IQN hub project partner.
Dstl

Research organisation · Porton Down

MoD science agency at Porton Down testing quantum clocks and navigation for UK forces, aiming for quantum navigation on aircraft by 2030.
Duality Quantum Photonics

Company · Bristol

Bristol designer of thin-film lithium niobate photonic chips for quantum computing and fast signal processing, with NQCC and UKAEA projects.
Durham University

University · Durham

Durham's quantum strengths: ultracold-molecule simulators, a £10m EPSRC programme from 2026, two quantum fellowships and the QuSIT hub.
Edwards Vacuum

Company · Burgess Hill

Burgess Hill vacuum engineering firm, part of Atlas Copco, building extreme high vacuum systems for Universal Quantum's trapped-ion computers.
Element Six

Company · Didcot

Harwell-based De Beers company making quantum-grade synthetic diamond with NV centres for sensors, masers and quantum networking.
ELUXI

Company · Loughborough

Company in Loughborough working on quantum components and photonics, founded 2011.
Engineering and Physical Sciences Research Council

Funder · Swindon

The UKRI research council behind the UK's five quantum research hubs, the NQCC's founding budget and quantum fellowships and skills.
Evelina London Children's Hospital

Government · London

Evelina London Children's Hospital is an NHS children's hospital run by Guy's and St Thomas' NHS Foundation Trust.
EY

Company · London

EY in UK quantum: first commercial user of BT and Toshiba's London QKD network, and author of quantum readiness surveys with the NQCC.
Filtronic

Company · Sedgefield

County Durham RF maker supplying microwave filters and diplexers for the control racks and dilution refrigerators of superconducting quantum computers.
Firgun Ventures

Investor · London

London quantum-only VC fund targeting $250m; invested in Quantum Motion's Series C and co-led Universal Quantum's $100m+ Series A in 2026.
Fraunhofer Centre for Applied Photonics

Research organisation · Glasgow

Glasgow's Fraunhofer centre for applied photonics, which led the QT Assemble consortium on compact quantum components and won £8m from DSIT in 2025.
Frazer-Nash Consultancy

Company · Leatherhead

KBR-owned Leatherhead consultancy that ran offshore wind farm optimisation on ORCA photonic hardware with The Crown Estate under NQCC SparQ.
Geomatrix Earth Science

Company · Leighton Buzzard

UK supplier of geophysical survey instruments that was a partner in the Gravity Pioneer consortium.
Gooch & Housego

Company · Ilminster

Somerset photonics maker whose acousto-optic deflectors and fibre modulators steer the lasers in neutral-atom quantum computers.
Government Communications Headquarters

Government · Cheltenham

UK intelligence and cyber agency, a founding partner of the National Quantum Technologies Programme, whose NCSC sets the UK's post-quantum migration dates.
GP Bullhound

Investor · London

London tech investment bank whose Bullhound Capital led Oxford Quantum Circuits' £260m Series C and Q-CTRL's $113m Series B.
GSK

Company · London

GSK's UK quantum work: an NQCC drug-reactivity proof of concept with Capgemini, a QCS hub partnership, and post-quantum cryptography planning.
Hashberg

Company · London

London deep-tech foundry whose quantum arm, run by Oxford's Stefano Gogioso, builds quantum programming tools including the pauliopt circuit library.
Heriot-Watt University

University · Edinburgh

Edinburgh university at the head of the £21.9m Integrated Quantum Networks Hub and the SPOQC quantum key distribution CubeSat launched in March 2026.
Hitachi Europe

Company · Stoke Poges

Hitachi Europe's Cambridge lab researches silicon spin qubits with the Cavendish Laboratory and was a hardware partner in Riverlane's NISQ.OS project.
HSBC

Investor · London

HSBC trials quantum key distribution on London's quantum-secured metro network and quantum algorithms for bond trading with IBM.
ICEoxford

Company · Witney

Witney cryogenics firm building cryostats for quantum labs and running ColdCycle, a server-rack cryostat to control silicon qubits at scale.
Imperial College London

University · London

Imperial's quantum work spans ship-borne cold-atom navigation, the AION atom interferometry project and three UK quantum research hubs.
INEX Microtechnology

Company · Newcastle upon Tyne

Newcastle compound semiconductor and MEMS fab that led the Q-Cell project on wafer vapour cells for atomic clocks and sensors; QT Assemble partner.
Infleqtion UK (ColdQuanta UK Ltd)

Company · Oxford

Oxford arm of neutral-atom firm Infleqtion: builder of an NQCC testbed, deliverer of a 100-qubit system to Harwell in 2026, and expanding at Oxford Tech Park.
Innovate UK

Funder · Swindon

UKRI's business funder for quantum, behind the Commercialising Quantum Technologies Challenge, the Quantum Missions pilot and ProQure.
IP Group

Investor · London

London-listed university commercialisation firm that ran a £12m UKRI-backed quantum investment partnership and backed Quantum Motion and OQC.
IQE

Company · Cardiff

Cardiff compound semiconductor wafer maker whose quantum work came through the AQuaSeC and QFoundry consortia.
ISISPACE

Company · Delft

Dutch small-satellite maker that built and supports SPOQC, the UK quantum key distribution CubeSat launched in March 2026.
Johnson Matthey

Company · London

Johnson Matthey's quantum work: catalyst simulation algorithms with Riverlane, an NQCC fuel cell catalyst project with Q-CTRL, and Phasecraft's ARPA-E award.
Kelvin Nanotechnology

Company · Glasgow

University of Glasgow nanofabrication arm making grating MOT chips, ion traps, MEMS gravimeters and lasers for quantum sensing and computing.
KETS Quantum Security

Company · Bristol

Bristol maker of chip-based quantum key distribution and random number generators, now integrated with Nokia and Cisco network equipment.
King's College London

University · London

King's College London's quantum work: the King's Quantum centre, NQCC SparQ projects on corrosion and ICU care, and Willow processor access.
Kuano

Company · Cambridge

Cambridge drug discovery company using quantum-mechanical simulation in its Quantum Lens platform to design covalent drugs and enzyme inhibitors.
Loughborough University

University · Loughborough

Loughborough develops microcomb lasers for portable atomic clocks in the QEPNT hub and partnered in BT's QAssure project on QKD assurance.
Lumino Technologies

Start-up · London

London start-up building entangled photon sources and quantum optical ground receivers for satellite links, including the ESA-funded FALQON receiver.
M Squared Lasers

Company · Glasgow

Former Glasgow laser maker behind the SolsTiS platform and the Maxwell neutral-atom prototype; in administration since August 2025, assets sold to Novacene.
Magnetic Shields

Company · Staplehurst

Kent manufacturer of magnetically shielded rooms and enclosures for quantum sensors, including wearable OPM-MEG brain scanners, trading since 1957.
Medicines Discovery Catapult

Research organisation · Alderley Park

Alderley Park drug discovery Catapult that mapped where quantum computers could help medicines research in the SEEQC-led QuPharma project.
Merck

Company · Darmstadt

German science group that backed SEEQC through M Ventures and was the pharmaceutical end user in the UK QuPharma quantum computing consortium.
Microchip Technology Caldicot

Company · Caldicot

Welsh semiconductor site of Microchip Technology that took part in the QFoundry consortium.
Mind Foundry

Start-up · Oxford

Oxford machine learning firm that worked on automated qubit tuning in the Riverlane-led AutoQT project and a 2026 Nature Electronics paper.
Ministry of Defence

Government · London

The MoD trials quantum navigation and timing at sea through Dstl and the Royal Navy, from cold-atom accelerometers to radar-linked quantum clocks.
Mode Labs

Company · Oxford

Oxford spin-out using quantum-computing microcavities to make low-power river sensors for phosphorus and ammonia; Ofwat Water Discovery Challenge finalist.
Molten Ventures

Investor · London

London-listed venture capital firm whose quantum exposure is Riverlane, the Cambridge error correction company whose £15m Series B it led in 2023.
MoniRail

Company · Birmingham

Birmingham rail monitoring spin-out heading a quantum inertial navigation system for trains, trialled on a Great Northern mainline service in March 2026.
Moth Quantum

Company · London

London creative quantum company behind Quantum Backrooms, a free browser game whose mazes are generated on live IBM and IQM quantum hardware.
Nanoco Technologies

Company · Runcorn

Runcorn maker of cadmium-free and near-infrared quantum dots for displays and image sensors, spun out of the University of Manchester.
National Cyber Security Centre

Government · London

The UK's cyber security authority: sets the 2028, 2031 and 2035 post-quantum migration milestones and assures PQC consultancies.
National Institute for Health and Care Research

Funder · London

Health research funder backing Q-BIOMED, the UK quantum biomedical sensing hub, and photonic diagnostics for children's eye care.
National Quantum Commercialisation Skills Centre

Research organisation

Planned EPSRC-funded national centre, worth up to £11.3m over four years, to build commercialisation skills in UK quantum research from December 2026.
National Security Strategic Investment Fund

Investor · London

UK government venture fund for national security and defence, holding 17 direct and indirect quantum positions including Nu Quantum, ORCA and Riverlane.
NCC Group

Company · Manchester

Manchester cyber security firm whose cryptographers co-wrote the FALCON post-quantum signature and which joined ORCA's Quantum Data Centre consortium.
Neuranics

Start-up · Glasgow

Glasgow spin-out making tunnelling magnetoresistance sensors that read picotesla magnetic fields, aimed at wearable heart monitoring and industry.
Newcastle University

University · Newcastle upon Tyne

Newcastle's School of Computing quantum group turns quantum foundations into sensing and imaging protocols; home of an EPSRC quantum fellowship.
NIQS Tech

Start-up · Leeds

Leeds start-up developing a needle-free, photonic-chip glucose monitor, now a partner in the Q-BIOMED quantum healthcare hub.
nodeQ

Company · York

York-founded maker of the telaQ quantum network digital twin and PQtunnel post-quantum tool; partner in the IQN hub and BT's QAssure project.
Novacene Photonics

Start-up · Glasgow

Glasgow laser company that bought M Squared Lasers' assets in 2025 and continues its SolsTiS lasers for quantum research.
NPL

Research organisation · Teddington

NPL in Teddington tests quantum clocks, sensors and computers for UK industry and helped found NMI-Q, the G7 metrology group for quantum standards.
NQCC

Research organisation · Harwell

The UK's national quantum computing lab at Harwell: seven hardware testbeds, the SparQ user programme and the UK's first 100-qubit machine.
Nu Quantum

Company · Cambridge

Cambridge spin-out building photonic networking hardware, including a rack-mounted Quantum Networking Unit, to link trapped-ion quantum processors.
Optalysys

Company · Leeds

Leeds photonic computing firm whose silicon photonic chips compute in the data path for encryption and AI workloads; classical optics, not qubits.
ORCA Computing

Company · London

London maker of room-temperature photonic quantum computers, with a testbed at the NQCC and a 2026 enterprise deployment in Japan with Toyota Tsusho.
Oxford Instruments

Company · High Wycombe

High Wycombe instruments group whose PlasmaPro etch and deposition tools help fabricate superconducting qubits; it sold its cryogenics arm in 2026.
Oxford Ionics

Company · Oxford

Oxford trapped-ion quantum computer maker, owned by IonQ since September 2025, whose QUARTET system runs at the National Quantum Computing Centre.
Oxford Quantum Circuits

Company · Reading

Reading-based maker of superconducting quantum computers (Toshiko, GENESIS), backed by a £260m Series C in June 2026.
PA Consulting Quantum Technology

Company · London

PA Consulting's quantum team builds defence prototypes for Dstl, from a Rydberg-atom radio receiver to quantum planning tools.
Parkwalk Advisors

Investor · London

IP Group's EIS fund manager for university spin-outs, an early investor in Quantum Motion and Phasecraft; launched a new Oxford fund in 2026.
Phasecraft

Company · London

Bristol and London quantum algorithms company working on materials simulation and grid optimisation, including Mondrian with the UK's NESO.
Phlux Technology

Start-up · Sheffield

Sheffield maker of low-noise 1550 nm avalanche photodiodes and partner in the MARCONI project on UK-built quantum key distribution receivers.
Photarix

Company · Lancaster

Lancaster spin-out making room-temperature, telecom-wavelength single-photon LEDs to bring quantum key distribution into ordinary fibre networks.
Photon Force

Company · Edinburgh

Edinburgh maker of single-photon SPAD cameras and sensors for quantum optics and lifetime imaging, spun out of the University of Edinburgh in 2015.
Planet First Partners

Investor · London

London growth investor with a quantum computing theme; led Riverlane's $75m Series C and backs the Quantonation quantum venture funds.
Plural

Investor · London

European VC firm co-founded by Ian Hogarth that co-led the $34m Series B of UK quantum algorithms company Phasecraft in September 2025.
Post-Quantum

Company · London

London post-quantum cryptography firm behind NTS-KEM, now part of Classic McEliece, selling quantum-safe VPN, messaging and identity tools.
PowerPhotonic

Company · Dalgety Bay

Fife maker of freeform micro-optics for lasers, and a partner in the Fraunhofer CAP-led QT Assemble quantum component consortium.
PQShield

Company · Oxford

Oxford spin-out supplying post-quantum cryptography as chip IP and software libraries; an NCSC-assured PQC migration consultancy since 2025.
PwC

Company · London

Company in London, founded 1849.
Q-BIOMED

Research organisation · London

UK national research hub developing quantum sensors for earlier disease diagnosis, run across six universities including UCL, Cambridge and Oxford.
Q-CTRL UK

Company · London

London arm of quantum control firm Q-CTRL, using Fire Opal software on UK projects in rail scheduling and fuel cell catalysts, and partner in TreQ's testbed.
Qinara

Company · Edinburgh

Edinburgh start-up behind Qronos, a reinforcement-learning quantum circuit optimiser it says cuts gate counts by 73 to 89%.
QinetiQ

Company · Farnborough

Defence research firm that flew quantum navigation payloads on its RJ100 test aircraft and ran its QinetiQAOA algorithm on OQC hardware in 2026.
QLM Technology

Company · Bristol

Bristol spin-out QLM makes a quantum lidar methane camera that finds and sizes gas leaks using single-photon detection, backed by SLB.
Qmatter

Company · London

Start-up from UCL quantum chemistry research compressing hard simulation problems to run on current quantum and classical hardware.
Qruise

Start-up · London

Quantum calibration software firm using digital twins and machine learning; partner in TreQ's multi-vendor Open Architecture Quantum testbed.
QTEC

Ecosystem and network · Bristol

Former University of Bristol quantum enterprise centre (2016 to 2022) credited with 28 start-ups that raised over £57m; also ran the QUEST pre-incubator.
Quantcore

Start-up · Glasgow

Glasgow spin-out making niobium superconducting quantum processors, resonators and sensors; £2.5m seed in February 2026 and IoP qBIG Prize winner.
QuantGates

Company · London

London maker of Spinorio, a calibration-aware AI quantum compiler and experiment tracker, and of the QuantumClass training platform.
Quantinuum

Company · Cambridge

Trapped-ion quantum computer maker with roots in Cambridge Quantum and UK offices in Cambridge, London and Oxford; partner of the Hartree Centre.
Quantonova

Start-up · Haverhill

Cambridge start-up developing error correction as a service for quantum computers and quantum LiDAR for inspecting transport infrastructure.
Quantopticon

Company · Guildford

Guildford software firm whose Quantillion simulator models quantum dot photon sources and spin-photon interfaces before they are fabricated.
Quantrologee

Company · Glasgow

Glasgow-registered quantum sensing start-up designing the Wee-g gravimeter, a magnetometer, MOT gratings and vapour cells.
QuantrolOx

Company · Oxford

Oxford spin-out whose Quantum EDGE software automates calibration and tuning of superconducting qubits; a partner in the QCi3 hub.
Quantum Base

Company · Lancaster

Lancaster spin-out listed on AIM whose Q-ID atomic-scale tags authenticate tax stamps and artworks with a smartphone scan.
Quantum Business Incubation Centre

Ecosystem and network · Harwell

STFC's Harwell incubator for quantum start-ups: up to £50k of R&D funding, £10k in vouchers and business coaching, run with the NQCC.
Quantum Communications Hub

Research organisation · York

York-led national quantum communications hub (2014 to 2024) that built the UK Quantum Network and began the SPOQC satellite mission.
Quantum Dice

Company · Oxford

Oxford spin-out making DISC quantum random number generators and ORBIT, a photonic probabilistic processor, now trialled with NATS and North Wales Police.
Quantum Exponential

Investor · London

London quantum investor holding stakes in Aegiq, Delta g, OQC, QLM, Siloton and Universal Quantum; delisted from AQSE in October 2024.
Quantum Fabrix

Company · Kidlington

Oxford spin-out QFX makes miniature atom sources for loading ion traps; raised £2m seed funding in 2025 and won £700k for its SrROCK project.
Quantum Motion

Company · London

London silicon quantum computing company that put a CMOS-built spin-qubit system into the NQCC and raised a $160m Series C in May 2026.
Quantum Security Defence

Company · London

Membership community offering quantum cybersecurity and post-quantum cryptography courses, briefings and peer reviews; UK company registered in Ipswich.
Quantum Software Lab

Research organisation · Edinburgh

Edinburgh research group on quantum algorithms, verification and security, running the £20m QATCH programme with the NQCC.
Qubitra

Company · London

Standard Chartered and Fujitsu joint venture in London building quantum and quantum-inspired software for fraud detection and financial risk.
Queen's University Belfast

University · Belfast

Belfast university combining quantum information theory with post-quantum cryptography research at CSIT; partner in the IQN and QEPNT hubs.
Queensgate Nanopositioning

Company · Torquay

Company in Torquay working on quantum components and precision motion, founded 1979.
QuEra Computing (UK)

Company · Harwell

UK arm of neutral-atom computer maker QuEra, building an NQCC testbed for atom shuttling and error correction from a Harwell base.
Quinas Technology

Company · London

Lancaster spin-out commercialising ULTRARAM, memory that stores data by quantum resonant tunnelling; scaled up with IQE in Cardiff.
QuJiT

Start-up · Southampton

Southampton start-up developing energy-aware control software for quantum processors; also resells SpinQ desktop NMR and superconducting quantum computers.
Qureca

Company · Glasgow

Quantum training and recruitment company running CPD courses, the SPRINT jobs platform and the Quantum EDGE Academy with QuantrolOx.
QuSIT

Research organisation · Birmingham

Birmingham-led national hub for quantum sensing, imaging and timing (2024 to 2029), successor to the Sensors and Timing and QuantIC hubs.
Rahko

Company · London

Former London quantum machine learning start-up for drug discovery, majority-acquired by Odyssey Therapeutics in December 2021.
RedWave Labs

Company · Didcot

Didcot electronics designer building single-photon detectors and UK-made QKD receivers, lead of the MARCONI and SEQOND projects.
Rigetti UK

Company · London

UK subsidiary of Rigetti Computing running a 24-qubit superconducting testbed at the NQCC and a £3.5m error-correction project with Riverlane.
Riverlane

Company · Cambridge

Cambridge quantum error correction company behind the Deltaflow real-time decoder and the open-source Deltakit toolkit; partner in the QCi3 hub.
RobQuant

Company · Sheffield

Sheffield start-up building room-temperature diamond NV magnetometers on silicon photonics for brain-signal sensing without cryogenics.
Rolls-Royce

Company · London

Rolls-Royce tests quantum algorithms for gas turbine fluid dynamics, with 2026 work alongside Classiq and with Quantinuum, Riverlane and EPCC.
Royal Holloway, University of London

University · Egham

Egham university studying superconducting qubit materials at ultra-low temperatures, a partner of Fermilab's SQMS centre and the QCi3 hub.
RSK

Company · Helsby

Engineering consultancy that led Gravity Pioneer, the project that took Birmingham's quantum gravity gradiometer into the field to find buried structures.
Science and Technology Facilities Council

National lab · Swindon

The UKRI council that delivers the NQCC at Harwell, funds quantum sensing for fundamental physics and runs the QuBIC start-up incubator.
SECQAI

Company · London

London chip designer behind the SE01 Q-Locked TPM: CHERI memory safety, post-quantum cryptography and optional quantum randomness, taped out with TSMC.
SEEQC UK

Company · London

UK arm of SEEQC, maker of superconducting digital control chips for qubits, which led the QuPharma drug-discovery quantum computing project.
SemiWise

Start-up · Glasgow

Glasgow firm making cryogenic transistor models and design kits so standard foundries can build control chips for quantum computers.
Sia Partners UK

Company · London

Consultancy with a London Quantum Lab since 2021; led commercialisation work in Universal Quantum's error-corrected quantum computer consortium.
Silicon Microgravity

Start-up · Cambridge

Cambridge developer of MEMS gravity sensors that was a partner in the Gravity Pioneer consortium.
Singular Photonics

Company · Edinburgh

Edinburgh spin-out making SPAD image sensors with in-pixel photon processing; raised $2.15m in 2026 and launched the Litavis sensor.
Skylark Lasers

Company · Edinburgh

Edinburgh maker of single-frequency DPSS lasers, including 780 nm rubidium sources, which led the £2.3m NX Micro laser project for quantum gravity sensors.
Spectomiq

Company · Brighton

Company in Brighton working on quantum sensing, founded 2026.
SpinOr

Start-up · Manchester

Manchester start-up designing rack-sized superconducting quantum computers for on-site use; backed by an Innovate UK project in 2025-26.
Spooqy

Company · London

London start-up building a compiler and AI design tools for quantum cryptography protocols beyond QKD, including certified randomness and quantum money.
Standard Chartered

Enterprise adopter · London

Standard Chartered supplies finance data to UK quantum machine learning projects with Rigetti and Imperial, and co-owns quantum venture Qubitra with Fujitsu.
sureCore

Company · Sheffield

Sheffield chip IP designer whose CryoMem memory works at cryogenic temperatures for control electronics inside quantum computers.
Synopsys UK

Company · Reading

The chip design software group's UK quantum link: cryogenic transistor modelling for qubit control chips in the sureCore-led cryo-CMOS consortium.
Teledyne UK

Company · Chelmsford

Chelmsford maker of the MINAC miniature atomic clock, developed with NPL under the KAIROS project; major partner in the Pioneer Gravity sensor consortium.
The Crown Estate

Government · London

Holder of the seabed around England, Wales and Northern Ireland that tested quantum optimisation for offshore wind siting in an NQCC project.
TMD Technologies

Company · Hayes

Hayes RF and microwave firm whose HARLEQUIN cold-atom navigation system completed sea trials in 2025; former partner in the DISCOVERY consortium.
Toshiba Europe

Company · Cambridge

Cambridge-based maker of quantum key distribution systems, supplier to BT's London quantum-secured network and partner in the Integrated Quantum Networks hub.
TreQ

Start-up · Oxford

Oxfordshire systems integrator building open-architecture quantum computers, including a multi-vendor testbed for Innovate UK's Quantum Missions pilot.
TundraSystems Global

Company · Cardiff

Company in Cardiff working on quantum hardware and photonic, founded 2014.
UK Research and Innovation

Funder · Swindon

The UK's main public funder of quantum research: EPSRC's five national hubs, the NQCC at Harwell and Innovate UK's industry competitions.
Universal Quantum

Company · Brighton

Sussex spin-out building modular trapped-ion quantum computer chips that run at 70K; raised over $100m in an October 2026 Series A.
University College London

University · London

Leads the Q-BIOMED quantum biomedical sensing hub and the UCL quantum institute; its researchers co-founded Phasecraft and Quantum Motion.
University of Bath

University · Bath

Bath designs specialty hollow-core optical fibres for quantum light sources and networks, and partnered in the QCS hub and ORCA's data centre project.
University of Birmingham

University · Birmingham

Birmingham leads QuSIT, the UK quantum sensing, imaging and timing hub, and made the first field find with a quantum gravity gradiometer.
University of Bristol

University · Bristol

Bristol's quantum photonics base: QET Labs, three national hub partnerships and a £35m innovation centre hosting KETS, QLM and Phasecraft.
University of Cambridge

University · Cambridge

Co-leads the Q-BIOMED quantum sensing hub, partners in QEPNT, runs a Cambridge to Bristol quantum network testbed and is hosting an IonQ centre.
University of Edinburgh

University · Edinburgh

Home of the Quantum Software Lab, whose Elham Kashefi is NQCC chief scientist; partner in the IQN and QEPNT hubs and source of Singular Photonics.
University of Exeter

University · Exeter

Exeter's quantum research: Janet Anders's group on quantum sensing and fibre-link security, plus a work package in the QuantIC imaging hub.
University of Glasgow

University · Glasgow

Lead of the QEPNT quantum navigation and timing hub, former lead of the QuantIC imaging hub, and home of the Centre for Quantum Technology.
University of Kent

University · Canterbury

Kent's quantum work runs through QuARC in Canterbury, host of the NQCC's first SparQ Access Showcase in 2026, and the Quantum Communications Hub.
University of Nottingham

University · Nottingham

Nottingham developed wearable quantum OPM-MEG brain scanners, spun out Cerca Magnetics, and partners in the QuSIT sensing hub.
University of Oxford

University · Oxford

Oxford leads the QCi3 quantum computing hub and is known for trapped-ion research and spin-outs such as Oxford Ionics and Quantum Motion.
University of Sheffield

University · Sheffield

Sheffield grows quantum dots for single-photon sources, hosts the National Epitaxy Facility and partners in the Integrated Quantum Networks hub.
University of Southampton

University · Southampton

Southampton runs an £18m doctoral centre in quantum technology engineering and partners in the IQN networks and QuSIT sensing hubs.
University of Strathclyde

University · Glasgow

Glasgow university behind the UK's quantum magnetometer network for space weather, lead of the Applied Quantum Technologies CDT, and partner in three hubs.
University of Surrey

University · Guildford

Surrey's quantum work: the SHOQ superfluid helium qubit design, single-ion implantation at its Ion Beam Centre, and past national hub roles.
University of Sussex

University · Brighton

Sussex's quantum centre near Brighton: trapped-ion research, the Universal Quantum spin-out and a £24m doctoral training centre run with Bristol.
University of Warwick

University · Coventry

Warwick Quantum links the university's diamond sensing, germanium materials and quantum theory groups, with staff in the Q-BIOMED, QCi3 and IQN hubs.
University of York

University · York

Host of the national Quantum Communications Hub to 2024; its researchers built a quantum source payload for the SPOQC CubeSat launched in March 2026.
Vector Photonics

Start-up · Glasgow

Glasgow spin-out making PCSEL lasers that led QUDITS2, a Quantum Missions pilot project on qudit-based quantum communication.
Vodafone

Company · Newbury

Vodafone tests ORCA's photonic quantum computer on fibre network design and IBM post-quantum cryptography for its Secure Net service.
Wave Photonics

Company · Cambridge

Cambridge photonic chip design firm making PDKs and packaging kits for quantum photonics; led an Innovate UK trapped-ion photonics project with Oxford Ionics.
West of England Combined Authority

Government · Bristol

Regional authority funding Bristol's £35m Quantum Technologies Innovation Centre and a quantum growth link with the US consortium Elevate Quantum.
Xen Quantum

Start-up · Cambridge

Cambridge-area Wave Photonics spin-out developing silicon-photonics QKD modules for existing telecom networks; out of stealth with seed funding in June 2026.
Zaiku Group

Company · Prescot

Merseyside maths and cryptography firm building the Sakurai platform for privacy-preserving quantum and hybrid biomedical computation.
Zero Point Motion

Company · Bristol

Bristol maker of photonic MEMS accelerometers and gyroscopes for navigation without satellites, based at the Quantum Technologies Innovation Centre.