Company lists · Data refreshed September 2026

Top 24 Quantum AI companies based in the United Kingdom

Name: Quantum AI companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 92 companies tracked

RevenueBase identified 92 quantum AI companies headquartered in the United Kingdom as of September 2026 and tracks 1,401 professional contacts across them, including 537 with verified work emails and 109 with mobile numbers. London is the largest hub.

This list covers quantum AI companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

92Companies

1,401Contacts tracked

537Verified emails

109Mobile numbers

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The 24 largest quantum AI companies based in the United Kingdom

Ranked by team size

Top 24 of 92 quantum AI companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to quantum AI companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Oxford Quantum Circuits OQC	Partial evidence	Shinfield, United KingdomHQ checked Sep 5, 2026	51-200	146 contacts →
	Partial evidence “Quantum computing is poised to reshape our world by addressing the complex challenges we face today.” Source: RevenueBase Database · checked Sep 5, 2026
2	Oxford Ionics	Partial evidence	Kidlington, United KingdomHQ checked Sep 5, 2026	51-200	87 contacts →
	Partial evidence “The future is quantum.” Source: RevenueBase Database · checked Sep 5, 2026
3	Universal Quantum	Partial evidence	Brighton, United KingdomHQ checked Sep 5, 2026	51-200	87 contacts →
	Partial evidence “A quantum computer harnesses the fundamental forces that govern the physical world.” Source: RevenueBase Database · checked Sep 5, 2026
4	Quantum Motion	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	81 contacts →
	Partial evidence “Quantum Motion is developing a revolutionary technology platform; not just a qubit, but a scalable array of qubits fabricated on silicon with a CMOS compatible process.” Source: RevenueBase Database · checked Sep 5, 2026
5	Phasecraft	Partial evidence	Bristol, United KingdomHQ checked Sep 5, 2026	11-50	44 contacts →
	Partial evidence “Phasecraft is the quantum algorithms company.” Source: RevenueBase Database · checked Sep 5, 2026
6	Orca Computing	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	40 contacts →
	Partial evidence “ORCA Computing develops full-stack photonic quantum computers with the aim of unlocking new fields of applications and helping transform industries.” Source: RevenueBase Database · checked Sep 5, 2026
7	Cambridge Quantum	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	29 contacts →
	Partial evidence “Cambridge Quantum (CQ), part of Quantinuum, is a quantum computing software and algorithms company, and in essence we solve one critical problem – to allow our customers to get…” Source: RevenueBase Database · checked Sep 5, 2026
8	MOTH	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	25 contacts →
	Partial evidence “Moth is a technology company building the next era of Media and Entertainment by delivering consumer products and services powered by quantum computing.” Source: RevenueBase Database · checked Sep 5, 2026
9	AEGIQ	Partial evidence	Sheffield, United KingdomHQ checked Sep 5, 2026	11-50	23 contacts →
	Partial evidence “Aegiq is a UK based full-stack photonic quantum computing company.” Source: RevenueBase Database · checked Sep 5, 2026
10	Edenbase	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	22 contacts →
	Strong evidence “EdenBase are venture investors and ecosystem builders, focused on frontier technologies (AI and quantum).” Source: RevenueBase Database · checked Sep 5, 2026
11	Time Machine Capital Limited	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	14 contacts →
	Indirect evidence “TMC² is an award-winning research and investment firm.” Source: RevenueBase Database · checked Sep 5, 2026
12	Quantum Software LAB	Partial evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	51-200	13 contacts →
	Partial evidence “The Quantum Software Lab, in collaboration with the National Quantum Computing Centre (NQCC) and based in the School of Informatics, will identify key challenges in the adoption…” Source: RevenueBase Database · checked Sep 5, 2026
13	Oxford Algorithms LTD	Strong evidence	Abingdon, United KingdomHQ checked Sep 5, 2026	11-50	11 contacts →
	Strong evidence “An AI Powered Macro Quant Fund, Oxford Algorithms creates and applies proprietary AI software solutions to drive smart investment decisions that result in returns that are low…” Source: RevenueBase Database · checked Sep 5, 2026
14	Quantum Exponential	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	10 contacts →
	Partial evidence “Quantum Exponential’s team of finance professionals, entrepreneurs and Quantum scientists is building a world leading portfolio of high-potential quantum technology companies.” Source: RevenueBase Database · checked Sep 5, 2026
15	TREQ	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	10 contacts →
	Partial evidence “We’re leading a quantum computing expedition to blaze the trail from prototypes to next-gen computing.” Source: RevenueBase Database · checked Sep 5, 2026
16	KXCO	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	9 contacts →
	Indirect evidence “KXCO is blockchain native.” Source: RevenueBase Database · checked Sep 5, 2026
17	Crypta Labs	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	8 contacts →
	Partial evidence “Crypta Labs is a cyber security company developing Quantum seeded random number generator designs specifically aimed at the security OEM hardware manufacturer sector.” Source: RevenueBase Database · checked Sep 5, 2026
18	Quantum Futures	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	7 contacts →
	Partial evidence “HELPING SHAPE THE FUTURE OF QUANTUM” Our mission is simple; to help quantum computing companies across the globe grow and scale through the acquisition of the right talent at the…” Source: RevenueBase Database · checked Sep 5, 2026
19	Quentangle	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	7 contacts →
	Partial evidence “We are a team of experienced computer scientists and physicists in the field of quantum computing and quantum communication with a significant number of peer-reviewed publications…” Source: RevenueBase Database · checked Sep 5, 2026
20	Spin Quantum Tech	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	7 contacts →
	Indirect evidence “Want to accelerate and empower your business to solve digital challenges faster and better?” Source: RevenueBase Database · checked Sep 5, 2026
21	Axiom Therapeutics	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	6 contacts →
	Partial evidence “Axiom Therapeutics is a techbio company founded on the vision of harnessing quantum-accurate physics and machine learning to design covalent medicines that maximise clinical…” Source: RevenueBase Database · checked Sep 5, 2026
22	Zaiku Group LTD	Indirect evidence	Liverpool, United KingdomHQ checked Sep 5, 2026	11-50	6 contacts →
	Indirect evidence “Zaiku Group is a collaborative Deep-tech R&D commercial venture on a mission to bring together talented people in mathematics and deep science.” Source: RevenueBase Database · checked Sep 5, 2026
23	Agitprop	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	4 contacts →
	Indirect evidence “Traditional equity factor models are mostly static.” Source: RevenueBase Database · checked Sep 5, 2026
24	2xn	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	3 contacts →
	Partial evidence “2xN is a quantum-inspired early-stage VC fund.” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: quantum AI companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names quantum AI companies.
Partial evidence: Its own public description names part of quantum AI companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name quantum AI companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 92 quantum AI companies based in the United Kingdom

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Quantum AI companies based in the United Kingdom at a glance

As of Sep 5, 2026

38.3%Verified-email coverage

7.8%Mobile-number coverage

15.2Average contacts per company

1-10Median size (employees)

62.0%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4970–30

4031–60

061–90

090–180

0180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among quantum AI companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “quantum AI companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names quantum AI companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among quantum AI companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 537 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Quantum AI companies by metro

Quantum AI companies in London57

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names quantum AI companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many quantum AI companies are there based in the United Kingdom?

RevenueBase identified 92 quantum AI companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Oxford Quantum Circuits OQC, headquartered in Shinfield, tops this list with the largest team on record.

Which city has the most quantum AI companies?

London leads with 57 headquartered companies, followed by Cambridge (7) and Edinburgh (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 537 verified decision-maker contacts tracked across these 92 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.