Company lists · Data verified August 2026

Top 21 Cloud AI service providers based in the United Kingdom

Name: Cloud AI service providers 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 661 companies tracked

There are 661 cloud AI service providers headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 5,861 professional contacts across them, including 1,408 with verified work emails and 327 with mobile numbers. London is the largest hub.

This list covers cloud AI service providers 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.

661Companies

5,861Contacts tracked

1,408Verified emails

327Mobile numbers

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The 21 largest cloud AI service providers based in the United Kingdom

Ranked by team size

Top 21 of 661 cloud AI service providers 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	Keepler Data Tech	London	201-500	224	24
3	Covasant	Reading	201-500	213	43
4	Colibri Digital	n/a	51-200	91	61
5	Predictx	London	51-200	83	47
6	CIVO	London	51-200	75	38
7	Seldon	London	51-200	64	19
8	Nexaquanta	London	51-200	53	26
9	Conquer AI	London	51-200	51	4
10	Celerik INC	London	51-200	46	19
11	Solutyics	Preston	51-200	45	2
12	Datasparq	London	51-200	40	15
13	netmind.ai	London	51-200	33	10
14	Anicalls	Bromley	201-500	29	5
15	Softblues	London	51-200	19	6
16	Unolabs	London	51-200	16	3
17	Inference Group	London	51-200	14	6
18	Inawisdom, A Cognizant Company	London	51-200	9	6
19	Ai-First Mindset	Hove	51-200	8	1
20	Praxis Digital	n/a	201-500	5	1
21	Incessant Technologies UK Limited	Edgware	501-1,000	3	1

Showing 21 of 661 cloud AI service providers based in the United Kingdom

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Cloud AI service providers based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 389 HQs

327Contacts with mobile numbers

10Emails re-verified in last 30 days

Companies by employee count

1-10

432

11-50

165

51-200

201-500

501-1,000

1,001-5,000

10001+

Cloud AI service providers by metro

Metro	Companies
Cloud AI service providers in London	389
Cloud AI service providers in Manchester	18
Cloud AI service providers in Birmingham	13
Cloud AI service providers in Glasgow	10
Cloud AI service providers in Edinburgh	7
Cloud AI service providers in Cambridge	6
Cloud AI service providers in Cardiff	5

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 “cloud AI service providers”, 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; 10 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 cloud AI service providers are there based in the United Kingdom?

There are 661 cloud AI service providers 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 cloud AI service providers?

London leads with 389 headquartered companies, followed by Manchester (18) and Birmingham (13).

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 1,408 verified decision-maker contacts tracked across these 661 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.