Company lists · Data refreshed September 2026

Top 23 Human resources consulting firms based in the United Kingdom

Name: Human resources consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 3,641 companies tracked

RevenueBase identified 3,641 human resources consulting firms headquartered in the United Kingdom as of September 2026 and tracks 116,038 professional contacts across them, including 39,653 with verified work emails and 23,568 with mobile numbers. London is the largest hub.

This list covers human resources 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

3,641Companies

116,038Contacts tracked

39,653Verified emails

23,568Mobile numbers

Unlock all 3,641 companies Free signup · no credit card · 500 free credits

The 23 largest human resources consulting firms based in the United Kingdom

Ranked by team size

Top 23 of 3,641 human resources 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 human resources 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.
#	Company	Headquarters	Employees	Contacts
1	NGA Human Resources, An Alight CompanyStrong evidence	London, United KingdomHQ checked Sep 3, 2026	1,001-5,000	2,730
	“At Alight \| NGA Human Resources our mission is to make HR work better.” Source: company website · checked Sep 3, 2026
2	ZellisIndirect evidence	Bristol, United KingdomHQ checked Sep 3, 2026	1,001-5,000	1,457
	“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Source: company website · checked Sep 3, 2026
3	TopsourceIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	201-500	543
	“We operate at the critical intersection of people, place and performance.” Source: company website · checked Sep 3, 2026
4	CronerIndirect evidence	Hinckley, United KingdomHQ checked Sep 3, 2026	201-500	399
	“Our award winning HR and health & safety services free you from workforce admin and help keep you on the right side of the law.” Source: company website · checked Sep 3, 2026
5	Q5Indirect evidence	London, United KingdomHQ checked Sep 3, 2026	501-1,000	340
	“Q5 is a global, award-winning consultancy specialising in 'organisational health' and performance.” Source: company website · checked Sep 3, 2026
6	Penna, An LHH BrandIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	201-500	339
	Source: company website · checked Sep 3, 2026
7	Mercer UKIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	10001+	334
	“At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Source: company website · checked Sep 3, 2026
8	JCW GroupIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	305
	“JCW Group is a specialist provider of talent services and an incubator for people-focused businesses.” Source: company website · checked Sep 3, 2026
9	AdviserplusPartial evidence	Ellesmere Port, United KingdomHQ checked Sep 3, 2026	201-500	207
	“AdviserPlus is the UK’s leading provider of HR technology, consulting, and advisory services.” Source: company website · checked Sep 3, 2026
10	Join TalentIndirect evidence	Brechin, United KingdomHQ checked Sep 3, 2026	201-500	202
	“Join Talent is a ‘talent acquisition as a service’ (TAaaS) business - dedicated to driving business scale up growth performance.” Source: company website · checked Sep 3, 2026
11	Omni RMSIndirect evidence	Altrincham, United KingdomHQ checked Sep 3, 2026	51-200	188
	“Omni – Talent Is Everything At Omni, we help businesses find, attract, and retain the right people to drive long-term success.” Source: company website · checked Sep 3, 2026
12	Consulting PointPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	168
	“Consulting Point is a multi-award-winning talent strategy and advisory firm headquartered in the United Kingdom, with a truly global reach.” Source: company website · checked Sep 3, 2026
13	Veran PerformanceIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	145
	“Winners of the UKOUG Business Transformation Advisory Partner of the Year Award 2025 Veran Performance is an advisory consultancy specialising in HR, Payroll, Procurement and…” Source: company website · checked Sep 3, 2026
14	Frazer JonesIndirect evidence	Global, United KingdomHQ checked Sep 3, 2026	51-200	141
	“We’re a global HR recruitment and executive search consultancy.” Source: company website · checked Sep 3, 2026
15	Talent Solutions UKIndirect evidence	United KingdomHQ checked Sep 3, 2026	1,001-5,000	121
	“Talent Solutions combines ManpowerGroup's leading global offerings RPO, TAPFIN-MSP and Right Management to provide end-to-end, data-driven capabilities across the talent lifecycle.” Source: company website · checked Sep 3, 2026
16	Mackinnon Bruce InternationalIndirect evidence	Leeds, United KingdomHQ checked Sep 3, 2026	51-200	86
	“We are a global recruitment expert with expertise across specialist markets.” Source: company website · checked Sep 3, 2026
17	Norman Broadbent PLCIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	85
	“As a leading Professional Services firm, we offer five interrelated Talent Acquisition & Advisory Services to help Boards with the challenges they face.” Source: company website · checked Sep 3, 2026
18	RMG SelectionIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	78
	“About RMG Selection RMG is an award-winning international executive recruitment and HR consultancy business focusing on specialist selection of high performers in niche…” Source: company website · checked Sep 3, 2026
19	The Curve GroupIndirect evidence	Hinton-In-The-Hedges, United KingdomHQ checked Sep 3, 2026	51-200	73
	“At The Curve Group we create extraordinary solutions that transform working lives by supporting organisations to design, develop and elevate Recruitment and HR functions.” Source: company website · checked Sep 3, 2026
20	Tagmatix360Indirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	73
	“Tagmatix is a diversified path-breaking Salesforce and workforce management company.” Source: company website · checked Sep 3, 2026
21	Blackwood GroupPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	69
	“Blackwood is a leading human capital advisory firm.” Source: company website · checked Sep 3, 2026
22	Nexus SearchIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	65
	“nexus – your global end to end supply chain leadership partner Nexus are an award winning hiring partner with over two decades’ experience in bringing top talent and clients…” Source: company website · checked Sep 3, 2026
23	Working TransitionsIndirect evidence	Moulton Park Northampton, United KingdomHQ checked Sep 3, 2026	51-200	65
	“At Working Transitions, we believe people drive business success.” Source: company website · checked Sep 3, 2026

Showing 23 of 3,641 human resources consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 39,653 reachable decision-makers.

Free signup · no credit card

See all 3,641 companies

Human resources consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026

1-10Median size (employees)

LondonLargest hub · 1061 HQs

23,568Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

2,931

11-50

506

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

31–60

4,251

61–90

22,339

90–180

12,657

180+

406

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 human resources 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 “human resources 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 human resources 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, 39,653 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.

Human resources consulting firms by metro

Human resources consulting firms in London1061
Human resources consulting firms in Manchester89
Human resources consulting firms in Bristol57
Human resources consulting firms in Birmingham55
Human resources consulting firms in Leeds54
Human resources consulting firms in Edinburgh34
Human resources consulting firms in Glasgow33

Frequently asked

How many human resources consulting firms are there based in the United Kingdom?

RevenueBase identified 3,641 human resources 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?

NGA Human Resources, An Alight Company, headquartered in London, tops this list with the largest team on record.

Which city has the most human resources consulting firms?

London leads with 1061 headquartered companies, followed by Manchester (89) 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 39,653 verified decision-maker contacts tracked across these 3,641 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.

Ready to reach these companies? Verified emails and direct dials for all 3,641 human resources consulting firms based in the United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

Human resources consulting firms by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Human resources consulting firms lists · New lists

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.