Company lists · Data verified August 2026

Top 25 AI consulting firms based in London, United Kingdom

Name: AI consulting firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 648 companies tracked

There are 648 AI consulting firms headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 9,090 professional contacts across them, including 2,813 with verified work emails and 820 with mobile numbers. London is the largest hub.

This list covers AI consulting firms headquartered in London, 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.

648Companies

9,090Contacts tracked

2,813Verified emails

820Mobile numbers

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The 25 largest AI consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 648 AI consulting firms based in London, 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	The Hackett Group INC	London	501-1,000	1,499	694
2	Hyperlink Infosystem	London	1,001-5,000	1,240	131
3	Kubrick Group	London	501-1,000	1,003	679
4	Faculty	London	201-500	565	269
5	Venturedive	London	201-500	399	117
6	Innova-Tsn	London	201-500	271	40
7	Keepler Data Tech	London	201-500	224	24
8	Cloudsmiths	London	51-200	150	8
9	Elsewhen	London	51-200	96	33
10	Optima Partners	London	51-200	90	52
11	Tecknoworks	London	51-200	79	42
12	Network Science	London	51-200	70	39
13	Altius NOW Avanade	London	201-500	69	5
14	Nexaquanta	London	51-200	53	26
15	Synergo Group	London	51-200	53	12
16	Onepoint Consulting	London	51-200	52	32
17	Aptitude Global	London	51-200	50	36
18	Xanda LTD	London	51-200	49	26
19	Celerik INC	London	51-200	46	19
20	Build Circle	London	11-50	46	4
21	Neurons LAB	London	51-200	45	8
22	Datasparq	London	51-200	40	15
23	avkalan.ai	London	11-50	34	17
24	Foil Data & AI	London	11-50	32	20
25	Beyond	London	51-200	32	14

Showing 25 of 648 AI consulting firms based in London, United Kingdom

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AI consulting firms based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 648 HQs

820Contacts with mobile numbers

23Emails re-verified in last 30 days

Companies by employee count

1-10

457

11-50

138

51-200

201-500

501-1,000

1,001-5,000

10001+

AI consulting firms by metro in the United Kingdom

Metro	Companies
AI consulting firms in London	648
AI consulting firms in Manchester	38
AI consulting firms in Glasgow	19
AI consulting firms in Birmingham	15
AI consulting firms in Edinburgh	12
AI consulting firms in Bristol	11
AI consulting firms in Reading	11

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 consulting firms”, with match quality audited by blind human judging, and headquartered in London, 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; 23 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 consulting firms are there based in London, United Kingdom?

There are 648 AI consulting firms headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

The Hackett Group INC, headquartered in London, tops this list with the largest team on record.

Which city has the most AI consulting firms?

London leads with 648 headquartered companies, followed by Manchester (38) and Glasgow (19).

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 2,813 verified decision-maker contacts tracked across these 648 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.