Company lists · Data refreshed September 2026

Top 25 Interim agencies based in London, United Kingdom

Name: Interim agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 776 companies tracked

RevenueBase identified 776 interim agencies headquartered in London, United Kingdom as of September 2026 and tracks 45,965 professional contacts across them, including 6,914 with verified work emails. London is the largest hub.

This list covers interim agencies headquartered in London, 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 21, 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 21, 2026 86% judged on-target in blind review

776Companies

45,965Contacts tracked

6,914Verified emails

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The 25 largest interim agencies based in London, United Kingdom

Ranked by team size

Top 25 of 776 interim agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to interim agencies: 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	HAYS	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	22,731 contacts →
	Indirect evidence “At Hays, we believe that the right job can transform a person's life - and the right person can transform a business.” Source: RevenueBase Database · checked Sep 21, 2026
2	Blue Arrow	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	2,341 contacts →
	Indirect evidence “Blue Arrow is the UK’s Best-Known Staffing Agency, placing tens of thousands of candidates into temporary and permanent jobs for employers in the transport, logistics, call…” Source: RevenueBase Database · checked Sep 21, 2026
3	Pagegroup	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	2,071 contacts →
	Indirect evidence “Michael Page, Page Personnel, Page Executive and Page Outsourcing are all part of PageGroup.” Source: RevenueBase Database · checked Sep 21, 2026
4	Avance Consulting	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
5	Office Angels	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	1,259 contacts →
	Indirect evidence “For 40 years now, we’ve been helping you to find the right path to a happy and successful future whether you’re a jobseeker or an employer.” Source: RevenueBase Database · checked Sep 21, 2026
6	Harvey Nash	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	1,248 contacts →
	Indirect evidence “We’re Harvey Nash, and we build amazing technology and digital teams.” Source: RevenueBase Database · checked Sep 21, 2026
7	OFF To Work	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	912 contacts →
	Indirect evidence “Casual Staffing \| Permanent Recruitment \| Temp to Perm \| Training \| Consultancy Off to Work offers more than just recruitment.” Source: RevenueBase Database · checked Sep 21, 2026
8	Guidant Global	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	746 contacts →
	Indirect evidence “Guidant Global delivers dynamic, tailored workforce solutions that empower businesses to thrive in ever-evolving markets.” Source: RevenueBase Database · checked Sep 21, 2026
9	GCS	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	568 contacts →
	Indirect evidence “For over 30 years, GCS has been at the forefront of digital transformation, building vast global communities of innovators and placing them in businesses shaping tomorrow's world.” Source: RevenueBase Database · checked Sep 21, 2026
10	Hirexa Solutions	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
11	Momenta	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
12	Pracyva	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	300 contacts →
	Indirect evidence “At Pracyva, we specialize in building future-ready teams for clients worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
13	Huntress	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	289 contacts →
	Indirect evidence “Since our establishment in Huntress has been at the forefront of recruitment across a range of specialist sectors.” Source: RevenueBase Database · checked Sep 21, 2026
14	Appetite4work	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	220 contacts →
	Indirect evidence “Appetite4Work is the sibling company of Appetite4Recruitment.” Source: RevenueBase Database · checked Sep 21, 2026
15	Linnk Group	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	194 contacts →
	Indirect evidence “Linnk Group provides staffing, outsourcing and professional services to our clients.” Source: RevenueBase Database · checked Sep 21, 2026
16	Bmsl Group	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	134 contacts →
	Indirect evidence “BMSL was formed in 1996 to provide specialist support to the construction industry.” Source: RevenueBase Database · checked Sep 21, 2026
17	Skills Alliance	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	131 contacts →
	Indirect evidence “Skills Alliance is a leading specialist Global Life Science and STEM workforce solutions company.” Source: RevenueBase Database · checked Sep 21, 2026
18	Newforce Global Services	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	128 contacts →
	Indirect evidence “Newforce provides global recruitment and workforce staffing solutions that help organizations access skilled talent across multiple markets.” Source: RevenueBase Database · checked Sep 21, 2026
19	Hellokindred	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	127 contacts →
	Indirect evidence “HelloKindred brings companies and teams together with top-tier creative, marketing, and digital talent.” Source: RevenueBase Database · checked Sep 21, 2026
20	Skillrecruit	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
21	Admiral Recruitment	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	123 contacts →
	Indirect evidence “Retail, commercial and hospitality recruitment specialist.” Source: RevenueBase Database · checked Sep 21, 2026
22	Chimera Recruitment	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	113 contacts →
	Indirect evidence “Temporary Sales Consultants in Luxury Retail, Events & Hospitality Staffing Chimera Recruitment is an agency specialising in luxury retail counter support, promotions, perm…” Source: RevenueBase Database · checked Sep 21, 2026
23	Spring Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	112 contacts →
	Indirect evidence “Spring Group plc (FTSE: SRG) is a leader in recruitment and resourcing, with an annual turnover in excess of £500 million.” Source: RevenueBase Database · checked Sep 21, 2026
24	Class1personnel	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	100 contacts →
	Indirect evidence “Class1 Personnel is committed to being a class above other recruitment agencies, and our skilled consultants consistently strive to achieve the very best results for our clients.” Source: RevenueBase Database · checked Sep 21, 2026
25	Team Spirits	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	99 contacts →
	Indirect evidence “At Team Spirits, we bring together great people who share a genuine passion for delivering outstanding service.” Source: RevenueBase Database · checked Sep 21, 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: interim agencies. 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 interim agencies.
Partial evidence: Its own public description names part of interim agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interim agencies. 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 776 interim agencies based in London, United Kingdom

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Interim agencies based in London, United Kingdom at a glance

As of Sep 21, 2026

15.0%Verified-email coverage

59.2Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

416

11-50

193

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 776 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 interim agencies, 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 London, United Kingdom whose own description of what they do matches “interim agencies”. 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 interim agencies), 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 interim agencies, and records with no verified work email. Companies headquartered outside London 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, 6,914 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 21, 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.

Interim agencies by metro in the United Kingdom

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 interim agencies, 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 interim agencies are there based in London, United Kingdom?

RevenueBase identified 776 interim agencies headquartered in London, 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?

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

Which city has the most interim agencies?

London leads with 776 headquartered companies, followed by Manchester (116) and Birmingham (64).

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 6,914 verified decision-maker contacts tracked across these 776 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 21, 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.