Company lists · Data verified August 2026

Top 25 AI api platform companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 320 companies tracked

There are 320 AI api platform companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 3,354 professional contacts across them, including 1,011 with verified work emails and 196 with mobile numbers. London is the largest hub.

This list covers AI api platform 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. Data current as of August 28, 2026.

320Companies

3,354Contacts tracked

1,011Verified emails

196Mobile numbers

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The 25 largest AI api platform companies based in the United Kingdom

Ranked by team size

Top 25 of 320 AI api platform companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Quantium	London	1,001-5,000	1,274	687
2	Covasant	Reading	201-500	213	43
3	Samyotech	London	51-200	80	4
4	Seldon	London	51-200	64	19
5	Turintech AI	London	11-50	53	31
6	Conquer AI	London	51-200	51	4
7	Dtskill AI	West End	11-50	50	2
8	netmind.ai	London	51-200	33	10
9	swifter.io	London	51-200	27	8
10	jiva.ai	n/a	11-50	24	16
11	Mezino Technologies	London	11-50	22	3
12	Brainpool AI	London	11-50	21	9
13	Taap Think Build RUN	Borehamwood	11-50	20	12
14	Softblues	London	51-200	19	6
15	Pareto AI	London	11-50	17	13
16	Swsam Solutions	London	11-50	16	4
17	Tovie AI	London	11-50	12	7
18	Wizard AI	London	11-50	10	5
19	Azaries Limited, Human Artificial Intelligence	London	11-50	9	3
20	Composo	London	11-50	8	4
21	Inatigo	London	11-50	7	3
22	Kortical	London	11-50	6	2
23	Altimist LTD	London	11-50	3	2
24	Weezboo	London	11-50	3	1
25	Cognant AI	London	11-50	1	1

Showing 25 of 320 AI api platform companies based in the United Kingdom

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AI api platform companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 207 HQs

196Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

204

11-50

51-200

201-500

1,001-5,000

AI api platform companies by metro

Metro	Companies
AI api platform companies in London	207
AI api platform companies in Manchester	7
AI api platform companies in Glasgow	6
AI api platform companies in Birmingham	5
AI api platform companies in Cambridge	4
AI api platform companies in Milton Keynes	3
AI api platform companies in England	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “AI api platform companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 320 AI api platform companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Quantium, headquartered in London, tops this list with the largest team on record.

Which city has the most AI api platform companies?

London leads with 207 headquartered companies, followed by Manchester (7) and Glasgow (6).

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 1,011 verified decision-maker contacts tracked across these 320 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.