Company lists · Data refreshed September 2026

Top 25 Generative AI consulting firms based in the United Kingdom

RevenueBase identified 1,897 generative AI consulting firms headquartered in the United Kingdom as of September 2026 and tracks 19,975 professional contacts across them, including 7,203 with verified work emails and 1,968 with mobile numbers. London is the largest hub.

This list covers generative AI consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
1,897Companies
19,975Contacts tracked
7,203Verified emails
1,968Mobile numbers
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The 25 largest generative AI consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 1,897 generative AI consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names generative AI consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Oliver The Brandtech GroupIndirect evidence
United Kingdom1,001-5,0003,242
Source: company website · checked Sep 3, 2026
2
The Hackett Group INCStrong evidence
London, United Kingdom501-1,0001,499

“The Hackett Group, Inc.(NASDAQ: HCKT) is a Gen AI strategic consulting and executive advisory firm that enables Digital World Class® performance.”

Source: company website · checked Sep 3, 2026
3
QuantiumPartial evidence
London, United Kingdom1,001-5,0001,274

“We've been building AI systems that run in production since 2002.”

Source: company website · checked Sep 3, 2026
4
Sigma AIPartial evidence
London, United Kingdom501-1,000877

“With 30+ years of experience in data annotation, we support AI innovators to build smarter AI.”

Source: company website · checked Sep 3, 2026
5
COVEOStrong evidence
London, United Kingdom501-1,000867

“Coveo is the leader in AI-Relevance, delivering best-in-class AI-search and generative experiences that maximize business outcomes at every point-of-experience.”

Source: company website · checked Sep 3, 2026
6
FacultyPartial evidence
London, United Kingdom201-500565

“Founded in 2014, Faculty is one of Europe’s leading applied AI companies.”

Source: company website · checked Sep 3, 2026
7
Innova-TsnPartial evidence
London, United Kingdom201-500271

“Innova-tsn is a Spanish multinational consulting firm founded 21 years ago, which has grown to position itself as one of the undisputed industry leaders in the design and…”

Source: company website · checked Sep 3, 2026
8
ArmakuniIndirect evidence
London, United Kingdom201-500264

“Armakuni is a cloud-native technology consultancy and AWS Premier Partner, trusted by enterprises across industries to accelerate their digital transformation journeys.”

Source: company website · checked Sep 3, 2026
9
Rezolve AIPartial evidence
London, United Kingdom51-200240

“Rezolve Ai revolutionizes how customers discover, engage and shop online.”

Source: company website · checked Sep 3, 2026
10
QuantcoIndirect evidence
London, United Kingdom201-500226

“QuantCo turns advances in artificial intelligence and statistical learning into real-world impact in leading enterprises and public sector organizations.”

Source: company website · checked Sep 3, 2026
11
CovasantPartial evidence
Reading, United Kingdom201-500213

“Imagine a future where your business operates efficiently, AI powers smarter decisions, and operational excellence becomes the standard.”

Source: company website · checked Sep 3, 2026
12
PeregrinePartial evidence
London, United Kingdom1,001-5,000202

“Peregrine are experts at accelerating AI-driven, people-centric technology and change transformation programmes for the private and public sector.”

Source: company website · checked Sep 3, 2026
13
TQAPartial evidence
Cardiff, United Kingdom201-500142

“At TQA, we turn Agentic AI into real-world advantage – transforming how organizations operate, adapt, and outperform.”

Source: company website · checked Sep 3, 2026
14
Studio GraphenePartial evidence
London, United Kingdom51-200114

“Studio Graphene is an AI-native digital product studio headquartered in London, with studios in Delhi, Lisbon and Geneva.”

Source: company website · checked Sep 3, 2026
15
TomoroPartial evidence
Manchester, United Kingdom51-200109

“Tomoro exists to help you win in your market by unlocking the AI-native version of your business.”

Source: company website · checked Sep 3, 2026
16
ElsewhenIndirect evidence
London, United Kingdom51-20096

“Run your most expensive operations for a third of the cost.”

Source: company website · checked Sep 3, 2026
17
Colibri DigitalPartial evidence
United Kingdom51-20091

“Colibri Digital is at the frontier of AI, Big Data and Cloud Computing.”

Source: company website · checked Sep 3, 2026
18
Optima PartnersPartial evidence
London, United Kingdom51-20090

“Optima Partners' AI-led approach to business transformation integrates scalable, systemised decision-making with comprehensive, tailored solutions.”

Source: company website · checked Sep 3, 2026
19
SingulierIndirect evidence
London, United Kingdom51-20079

“With a presence in Paris, London, and Munich, Singulier partners with private equity funds, portfolio companies, and corporates to accelerate transformation and unlock value…”

Source: company website · checked Sep 3, 2026
20
TecknoworksPartial evidence
London, United Kingdom51-20079

“To this day, we’ve delivered projects, driven by a passion for solving real business problems with data and AI.”

Source: company website · checked Sep 3, 2026
21
PanamourePartial evidence
Cranbrook, United Kingdom51-20072

“Panamoure is the ultimate AI-first digital value creation consultancy helping Private Equity firms, portfolio companies and ambitious corporates accelerate growth, improve agility…”

Source: company website · checked Sep 3, 2026
22
Synergo GroupStrong evidence
London, United Kingdom51-20053

“Synergo Group is an AI-first consulting and engineering firm helping regulated and mid-market organizations design, govern, and operationalize AI-driven decision systems.”

Source: company website · checked Sep 3, 2026
23
Onepoint ConsultingIndirect evidence
London, United Kingdom51-20052

“We build digital worlds with our collaborators to ensure all the worlds we live in reap the benefits.”

Source: company website · checked Sep 3, 2026
24
Conquer AIPartial evidence
London, United Kingdom51-20051

“We build AI Native companies.”

Source: company website · checked Sep 3, 2026
25
Aptitude GlobalPartial evidence
London, United Kingdom51-20050

“Aptitude pairs specialists practitioners with proprietary software-delivering data, AI, and operational transformation at speed, with greater returns and enduring performance.”

Source: company website · checked Sep 3, 2026

Showing 25 of 1,897 generative AI consulting firms based in the United Kingdom

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Generative AI consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026
1-10Median size (employees)
LondonLargest hub · 1140 HQs
1,968Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
1,431
11-50
341
51-200
87
201-500
17
501-1,000
8
1,001-5,000
7
10001+
2

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 generative AI consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “generative AI consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among generative AI consulting firms, 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 an evidence 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, 7,203 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 3, 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.

Generative AI consulting firms by metro

  • Generative AI consulting firms in London1140
  • Generative AI consulting firms in Manchester56
  • Generative AI consulting firms in Glasgow26

Frequently asked

How many generative AI consulting firms are there based in the United Kingdom?

RevenueBase identified 1,897 generative AI consulting firms 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?

Oliver The Brandtech Group, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most generative AI consulting firms?

London leads with 1140 headquartered companies, followed by Manchester (56) and Glasgow (26).

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 7,203 verified decision-maker contacts tracked across these 1,897 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 3, 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 SmartSearch, 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.