Company lists · Data refreshed September 2026

Top 25 AI research staffing companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 1,074 companies tracked

RevenueBase identified 1,074 AI research staffing companies headquartered in the United Kingdom as of September 2026 and tracks 17,215 professional contacts across them, including 3,711 with verified work emails. London is the largest hub.

This list covers AI research staffing 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

1,074Companies

17,215Contacts tracked

3,711Verified emails

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The 25 largest AI research staffing companies based in the United Kingdom

Ranked by team size

Top 25 of 1,074 AI research staffing companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to AI research staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Avance Consulting	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	1,927 contacts →
	Indirect evidence “Avance Consulting is a global organization focused on delivering innovative talent solution services to some of the most renowned companies in the world, across industries that…” Source: RevenueBase Database · checked Sep 27, 2026
2	The Recruitment CO	Indirect evidence	Northampton, United KingdomHQ checked Sep 27, 2026	1,001-5,000	558 contacts →
	Indirect evidence “We’re THE RECRUITMENT Co.” Source: RevenueBase Database · checked Sep 27, 2026
3	Interaction Recruitment	Indirect evidence	Huntingdon, United KingdomHQ checked Sep 27, 2026	201-500	410 contacts →
	Indirect evidence “Interaction is one of the UK's fastest growing independent recruitment businesses, recognised and published as "UK's #1 General Recruiter".” Source: RevenueBase Database · checked Sep 27, 2026
4	Hirexa Solutions	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	377 contacts →
	Indirect evidence “Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
5	Momenta	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	313 contacts →
	Indirect evidence “With over 30 years of experience servicing blue-chip clients, Momenta Group is renowned for our expertise and quality-driven approach.” Source: RevenueBase Database · checked Sep 27, 2026
6	Pracyva	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	300 contacts →
	Indirect evidence “At Pracyva, we specialize in building future-ready teams for clients worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
7	Tangent International	Indirect evidence	Billericay, United KingdomHQ checked Sep 27, 2026	201-500	244 contacts →
	Indirect evidence “Tangent International Integrated Talent and Delivery across Technology and Communications.” Source: RevenueBase Database · checked Sep 27, 2026
8	Harnham	Strong evidence	Wimbledon, United KingdomHQ checked Sep 27, 2026	201-500	239 contacts →
	Strong evidence “Harnham provides specialist Data and AI recruitment and staffing services, along with bespoke training solutions, across multiple industry verticals, operating in the UK, the USA…” Source: RevenueBase Database · checked Sep 27, 2026
9	IC Resources	Indirect evidence	Reading, United KingdomHQ checked Sep 27, 2026	51-200	211 contacts →
	Indirect evidence “In the search for highly skilled talent, IC Resources has supported the technology community since We match great talent to deep-tech companies around the world.” Source: RevenueBase Database · checked Sep 27, 2026
10	Gattaca	Indirect evidence	Whiteley, United KingdomHQ checked Sep 27, 2026	501-1,000	209 contacts →
	Indirect evidence “Always Ahead.” Source: RevenueBase Database · checked Sep 27, 2026
11	Linnk Group	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	194 contacts →
	Partial evidence “Linnk Group provides staffing, outsourcing and professional services to our clients.” Source: RevenueBase Database · checked Sep 27, 2026
12	HR Consultancy	Indirect evidence	Glasgow, United KingdomHQ checked Sep 27, 2026	n/a	190 contacts →
	Indirect evidence “Welcome to HRC Recruitment Looking for a job in Glasgow, Edinburgh or the rest of Scotland?” Source: RevenueBase Database · checked Sep 27, 2026
13	Techtree	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	n/a	188 contacts →
	Partial evidence “TechTree is an AI-powered recruitment platform that combines a proprietary talent data platform, predictive AI, and a network of human recruiters to deliver the right candidates…” Source: RevenueBase Database · checked Sep 27, 2026
14	Outsource UK	Indirect evidence	Swindon, United KingdomHQ checked Sep 27, 2026	51-200	173 contacts →
	Indirect evidence “Outsource UK is one of the country’s largest and most successful independent specialist recruitment agencies, established over 30 years ago.” Source: RevenueBase Database · checked Sep 27, 2026
15	Abraxas	Partial evidence	Luton, United KingdomHQ checked Sep 27, 2026	201-500	161 contacts →
	Partial evidence “With over 30 years experience of serving clients Internationally and filling their IT and Life Sciences staffing vacancies, both Contract and Permanent, you can be assured we will…” Source: RevenueBase Database · checked Sep 27, 2026
16	XCEDE	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	145 contacts →
	Indirect evidence “Global Technology Recruitment Specialists.” Source: RevenueBase Database · checked Sep 27, 2026
17	Skillrecruit	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	125 contacts →
	Indirect evidence “Skilliantech Ltd, trading as “SkillRecruit”, is a specialist IT and Engineering recruitment agency delivering comprehensive coverage of recruitment services across all industries…” Source: RevenueBase Database · checked Sep 27, 2026
18	Spencer Clarke Group	Indirect evidence	Preston, United KingdomHQ checked Sep 27, 2026	51-200	125 contacts →
	Indirect evidence “Formed in 2017, we’re an energetic, ambitious and award winning recruitment agency operating across 11 specialisms in the public and private sector: • Accountancy & Finance •…” Source: RevenueBase Database · checked Sep 27, 2026
19	Anson Mccade	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	121 contacts →
	Partial evidence “Anson McCade is a specialist recruitment agency focusing on four primary sectors: Quant Research, Trading & Risk; Digital & Data Analytics; IT & Cyber Security; Business Change &…” Source: RevenueBase Database · checked Sep 27, 2026
20	STR Group	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 27, 2026	51-200	121 contacts →
	Indirect evidence “The STR Group is a collection of micro-specialist brands aligned to specific technical sectors.” Source: RevenueBase Database · checked Sep 27, 2026
21	Travail Employment Group	Indirect evidence	Gloucester, United KingdomHQ checked Sep 27, 2026	51-200	116 contacts →
	Indirect evidence “In operation since 1977, our reputation for excellence has come from providing Companies and Individuals with an outstanding recruitment service to suit their every need.” Source: RevenueBase Database · checked Sep 27, 2026
22	Peoplescout Emea	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	114 contacts →
	Indirect evidence “Different skillset.” Source: RevenueBase Database · checked Sep 27, 2026
23	Square ONE Resources	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	108 contacts →
	Indirect evidence “With over 25 years in the technology recruitment sector, Square One is an award-winning specialist recruitment agency.” Source: RevenueBase Database · checked Sep 27, 2026
24	Venturi	Indirect evidence	Manchester, United KingdomHQ checked Sep 27, 2026	51-200	101 contacts →
	Indirect evidence “It’s everything we stand for.” Source: RevenueBase Database · checked Sep 27, 2026
25	Select Recruitment	Partial evidence	Norwich, United KingdomHQ checked Sep 27, 2026	51-200	91 contacts →
	Partial evidence “Select Recruitment was established in 1995 to provide a high quality and personal staffing service to clients and candidates.” Source: RevenueBase Database · checked Sep 27, 2026

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: AI research staffing 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 AI research staffing companies.
Partial evidence: Its own public description names part of AI research staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name AI research staffing 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 1,074 AI research staffing companies based in the United Kingdom

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AI research staffing companies based in the United Kingdom at a glance

As of Sep 27, 2026

21.6%Verified-email coverage

16.0Average contacts per company

1-10Median size (employees)

42.4%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

667

11-50

284

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,074 companies.

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 AI research staffing 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 the United Kingdom whose own description of what they do matches “AI research staffing 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 AI research staffing 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 AI research staffing companies, 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 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, 3,711 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 27, 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.

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 AI research staffing 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 AI research staffing companies are there based in the United Kingdom?

RevenueBase identified 1,074 AI research staffing companies 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?

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

Which city has the most AI research staffing companies?

London leads with 455 headquartered companies, followed by Manchester (38) and Birmingham (18).

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 3,711 verified decision-maker contacts tracked across these 1,074 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 27, 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 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.