Company lists · Data verified August 2026

Top 25 Employee relations consulting firms based in the United Kingdom

Name: Employee relations consulting 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 3,340 companies tracked

There are 3,340 employee relations consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 22,198 professional contacts across them, including 7,266 with verified work emails and 2,622 with mobile numbers. London is the largest hub.

This list covers employee relations 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. Data current as of August 28, 2026.

3,340Companies

22,198Contacts tracked

7,266Verified emails

2,622Mobile numbers

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The 25 largest employee relations consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 3,340 employee relations consulting 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	Allegis Global Solutions	Bracknell	1,001-5,000	2,930	1,061
2	Croner	Hinckley	201-500	399	183
3	Mercer UK	London	10001+	334	155
4	Ethos Farm	New York	1,001-5,000	264	81
5	Karma Management Global Consulting Solutions PVT LTD	London	51-200	254	87
6	RHR International	London	201-500	209	123
7	Circles North America	London	201-500	194	12
8	Consulting Point	London	51-200	168	24
9	The HR Dept	Bristol	51-200	167	94
10	Frazer Jones	Holt	51-200	141	62
11	Eric Salmon & Partners	n/a	51-200	118	63
12	Norman Broadbent PLC	Edinburgh	51-200	85	62
13	Mackin Talent	London	51-200	77	35
14	Wirehouse Employer Services	Warrington	51-200	76	29
15	Blackwood Group	London	51-200	69	41
16	Nexus Search	London	51-200	65	25
17	PIB Employee Benefits	York	51-200	62	52
18	Oakleaf Partnership	Birmingham	51-200	58	35
19	Milliman UK	London	1,001-5,000	57	40
20	Randstad UK	Luton	1,001-5,000	56	11
21	Pikon Germany	Castle Donington	51-200	55	38
22	Warriorz Technologies	London	201-500	51	16
23	Aviserv	London	201-500	40	3
24	Genius Consultants LTD	Manchester	201-500	33	2
25	Verto HR	London	201-500	31	10

Showing 25 of 3,340 employee relations consulting firms based in the United Kingdom

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Employee relations consulting firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 896 HQs

2,622Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

2,763

11-50

416

51-200

201-500

501-1,000

1,001-5,000

10001+

Employee relations consulting firms by metro

Metro	Companies
Employee relations consulting firms in London	896
Employee relations consulting firms in Manchester	71
Employee relations consulting firms in Bristol	57
Employee relations consulting firms in Leeds	51
Employee relations consulting firms in Birmingham	45
Employee relations consulting firms in Glasgow	38
Employee relations consulting firms in Edinburgh	30

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 “employee relations consulting 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; 0 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 employee relations consulting firms are there based in the United Kingdom?

There are 3,340 employee relations consulting firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Allegis Global Solutions, headquartered in Bracknell, tops this list with the largest team on record.

Which city has the most employee relations consulting firms?

London leads with 896 headquartered companies, followed by Manchester (71) and Bristol (57).

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 7,266 verified decision-maker contacts tracked across these 3,340 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.