Company lists · Data refreshed August 2026
Top 25 Artificial intelligence reasoning companies based in London, United Kingdom
RevenueBase identified 132 artificial intelligence reasoning companies headquartered in London, United Kingdom as of August 2026 and tracks 1,445 professional contacts across them, including 611 with verified work emails and 120 with mobile numbers. London is the largest hub.
This list covers artificial intelligence reasoning companies headquartered in London, 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 August 31, 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.
The 25 largest artificial intelligence reasoning companies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 467 contacts → | ||||
Indirect evidence “Owkin is building the first BASI to unlock breakthroughs in therapies, diagnostics, and rejuvenation, while reshaping how humanity understands and engineers biology.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 226 contacts → | ||||
Strong evidence “QuantCo turns advances in artificial intelligence and statistical learning into real-world impact in leading enterprises and public sector organizations.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 68 contacts → | ||||
Partial evidence “At Normal, we're rewriting AI foundations to advance the frontier of reasoning and reliability in the physical world.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 51 contacts → | ||||
Indirect evidence “We build AI Native companies.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 27 contacts → | ||||
Indirect evidence “Enterprise-grade AI for Finance.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 24 contacts → | ||||
Indirect evidence “Enabling better, compliant, engagement in retail finance.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 contacts → | ||||
Strong evidence “Brainpool is an Artificial Intelligence services company powered by a global network of 500 AI and Machine Learning experts coming from some of the leading AI hubs such as UCL…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 20 contacts → | ||||
Indirect evidence “Empowering businesses with AI Agents that deliver unparalleled accuracy and drive measurable ROI, we simplify the journey from visionary AI concepts to transformative, impactful…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 20 contacts → | ||||
Partial evidence “At ARGenesis, we build practical, explainable AI and decision intelligence solutions at the intersection of data, domain expertise and real-world decision-making.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 19 contacts → | ||||
Partial evidence “Enterprise-grade AI reasoning engine | AI Agent SDK & Orchestration Layer | Agent Marketplace : x.com/openservai : https://t.me/openservai :@openservai …” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 18 contacts → | ||||
Partial evidence “Catalect is an AI company that accelerates business outcomes through agentic AI systems, intelligent automation, and conversational AI built for real operational environments.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 16 contacts → | ||||
Indirect evidence “Transform data into opportunities.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 contacts → | ||||
Indirect evidence “Zenpulsar is pioneering the next generation of multi-agent AI systems for institutional investors.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Indirect evidence “Ani builds AI workers for financial services.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 contacts → | ||||
Partial evidence “Deepsearch Labs is a deep-tech company pioneering the next generation of AI-powered intelligence solutions.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Indirect evidence “Sevva AI, is a leading provider of enterprise AI Agents for corporations and financial institutions.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Strong evidence “At LinearWorks, we are pioneering the use of artificial intelligence, earth observation, and deep learning to help organisations gain strategic insights and optimise complex…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 contacts → | ||||
Indirect evidence “At Atman Labs, we are driven by a future where AI systems are more than just passive output generators but instead benevolent human counterparts.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Indirect evidence “UMNAI builds neuro-symbolic AI decision engines for regulated businesses.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Partial evidence “AI infin8 specialises in intelligent AI solutions specifically for financial services, to create systems that understand, learn, and collaborate with human experts.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Strong evidence “Mercury Labs helps the world's most forward-thinking organisations to harness the power of artificial intelligence, unlocking efficiency and accelerating growth.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Strong evidence “At Bering we believe that Artificial Intelligence is helping make the World a better place.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Strong evidence “AI Nexus is a diversified artificial intelligence company focused on building Cognitive AI applications across multiple industry verticals” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Captide provides agentic AI systems grounded in global corporate disclosures that power leading asset managers, investment banks, and hedge funds.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “AppliedAI is a leading AI technology company founded in 2021 by Arya H.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
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: artificial intelligence reasoning 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 artificial intelligence reasoning companies.
- Partial evidence
- Its own public description names part of artificial intelligence reasoning companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name artificial intelligence reasoning 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 25 of 132 artificial intelligence reasoning companies based in London, United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 611 reachable decision-makers.
Free signup · no credit card
Artificial intelligence reasoning companies based in London, United Kingdom at a glance
As of Aug 31, 2026Companies by employee count
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 artificial intelligence reasoning 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 London, United Kingdom whose own description of what they do matches “artificial intelligence reasoning 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 artificial intelligence reasoning 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 artificial intelligence reasoning companies, and records with no verified work email. Companies headquartered outside London 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, 611 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 August 31, 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.
Artificial intelligence reasoning companies by metro in the United Kingdom
- Artificial intelligence reasoning companies in London154
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 artificial intelligence reasoning 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 artificial intelligence reasoning companies are there based in London, United Kingdom?
RevenueBase identified 132 artificial intelligence reasoning companies headquartered in London, United Kingdom as of August 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?
OWKIN, headquartered in London, tops this list with the largest team on record.
Which city has the most artificial intelligence reasoning companies?
London leads with 154 headquartered companies, followed by Oxford (5) and Cambridge (5).
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 611 verified decision-maker contacts tracked across these 132 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.
Ready to reach these companies? Verified emails and direct dials for all 132 artificial intelligence reasoning companies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Artificial intelligence reasoning companies by geography
- Artificial intelligence reasoning companies based in the United States
- Artificial intelligence reasoning companies based in the United Kingdom
- Artificial intelligence reasoning companies based in Brazil
- Artificial intelligence reasoning companies based in Canada
- Artificial intelligence reasoning companies based in Germany
- Artificial intelligence reasoning companies based in France
- Artificial intelligence reasoning companies based in Spain
- Artificial intelligence reasoning companies based in Australia
- Artificial intelligence reasoning companies based in Italy
- Artificial intelligence reasoning companies based in the Netherlands
- Artificial intelligence reasoning companies based in South Africa
- Artificial intelligence reasoning companies based in Poland
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Artificial intelligence reasoning companies based in the United States
- Artificial intelligence reasoning companies based in the United Kingdom
- Artificial intelligence reasoning companies based in Brazil
- Artificial intelligence reasoning companies based in Canada
- Artificial intelligence reasoning companies based in Germany
- Artificial intelligence reasoning companies based in France