Company lists · Data verified August 2026

Top 25 Contract staffing firms based in the United Kingdom

Name: Contract staffing firms 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 2,985 companies tracked

There are 2,985 contract staffing firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 72,727 professional contacts across them, including 15,832 with verified work emails and 5,871 with mobile numbers. London is the largest hub.

This list covers contract staffing 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. Data current as of August 28, 2026.

2,985Companies

72,727Contacts tracked

15,832Verified emails

5,871Mobile numbers

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The 25 largest contract staffing firms based in the United Kingdom

Ranked by team size

Top 25 of 2,985 contract staffing firms 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	REED	Swansea	1,001-5,000	5,828	968
2	Magnit Global	Knutsford	10001+	3,570	1,874
3	Allegis Group	Bracknell	10001+	3,118	1,159
4	Allegis Global Solutions	Bracknell	1,001-5,000	2,930	1,061
5	Staffline Recruitment Limited	Nottingham	501-1,000	1,863	275
6	The Best Connection	Wallington	501-1,000	1,598	328
7	Constellation	Twickenham	1,001-5,000	1,012	25
8	Randstad UK	Luton	1,001-5,000	954	243
9	ARC Hospitality Recruitment	Liverpool	10001+	855	25
10	TTM Healthcare Group	Manchester Manchester	1,001-5,000	575	2
11	The Recruitment CO	Northampton	1,001-5,000	560	18
12	Manpower UK	Crawley	501-1,000	491	84
13	Mach Recruitment LTD	Bradford	10001+	442	83
14	Selective Personnel	Glasgow City	1,001-5,000	326	11
15	At Your Service Event Staffing	London	1,001-5,000	212	1
16	Gattaca	Whiteley	501-1,000	207	92
17	24-7 Recruitment Services LTD	Bromsgrove	1,001-5,000	188	24
18	Workwell	Watford	501-1,000	141	44
19	Industria Personnel	Leicester	1,001-5,000	101	1
20	Team Spirits	London	501-1,000	99	8
21	Rapier Employment LTD	Abingdon	1,001-5,000	87	18
22	The Hospitality Company	London	501-1,000	44	2
23	Staff 86	Chester	1,001-5,000	35	5
24	AGS Recruitment	London	501-1,000	33	4
25	Challenge-Trg Recruitment	Northampton	1,001-5,000	29	3

Showing 25 of 2,985 contract staffing firms based in the United Kingdom

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Contract staffing firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 671 HQs

5,871Contacts with mobile numbers

31Emails re-verified in last 30 days

Companies by employee count

1-10

1,661

11-50

829

51-200

280

201-500

501-1,000

1,001-5,000

10001+

Contract staffing firms by metro

Metro	Companies
Contract staffing firms in London	671
Contract staffing firms in Manchester	96
Contract staffing firms in Birmingham	61
Contract staffing firms in Leeds	49
Contract staffing firms in Bristol	47
Contract staffing firms in Glasgow	33
Contract staffing firms in Liverpool	32

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 “contract staffing firms”, 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; 31 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 contract staffing firms are there based in the United Kingdom?

There are 2,985 contract staffing firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

REED, headquartered in Swansea, tops this list with the largest team on record.

Which city has the most contract staffing firms?

London leads with 671 headquartered companies, followed by Manchester (96) and Birmingham (61).

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 15,832 verified decision-maker contacts tracked across these 2,985 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.