Company lists · Data refreshed September 2026

Top 25 HR consulting firms based in the United Kingdom

Name: HR 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 30, 2026 5,428 companies tracked

RevenueBase identified 5,428 HR consulting firms headquartered in the United Kingdom as of September 2026 and tracks 52,043 professional contacts across them, including 16,158 with verified work emails and 4,200 with mobile numbers. London is the largest hub.

This list covers HR 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 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 30, 2026 86% judged on-target in blind review

5,428Companies

52,043Contacts tracked

16,158Verified emails

4,200Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest HR consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 5,428 HR consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to HR consulting firms: 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	Robert Walters	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	4,423 contacts →
	Indirect evidence “Robert Walters is the world’s most trusted talent solutions business.” Source: RevenueBase Database · checked Sep 30, 2026
2	Antal International	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	1,979 contacts →
	Indirect evidence “Antal International is a global executive search organisation with over 130 offices in more than 30 countries.” Source: RevenueBase Database · checked Sep 30, 2026
3	Avance Consulting	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	1,927 contacts →
	Partial 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 30, 2026
4	Insights	Indirect evidence	Dundee, United KingdomHQ checked Sep 30, 2026	501-1,000	897 contacts →
	Indirect evidence “We're a people development company, built to create a world where people truly understand themselves and others, and are inspired to make a positive difference in everything they…” Source: RevenueBase Database · checked Sep 30, 2026
5	Topsource	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	543 contacts →
	Indirect evidence “We operate at the critical intersection of people, place and performance.” Source: RevenueBase Database · checked Sep 30, 2026
6	Page Executive	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	5,001-10,000	450 contacts →
	Indirect evidence “Page Executive is a global leader in executive search & recruitment.” Source: RevenueBase Database · checked Sep 30, 2026
7	Transearch	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	450 contacts →
	Partial evidence “TRANSEARCH International is a global executive search and leadership consulting organisation.” Source: RevenueBase Database · checked Sep 30, 2026
8	Aldelia	Indirect evidence	Londres, United KingdomHQ checked Sep 30, 2026	1,001-5,000	410 contacts →
	Indirect evidence “Aldelia is a world leading Human Resources advisory firm, leader in professional recruitment services.” Source: RevenueBase Database · checked Sep 30, 2026
9	Croner	Partial evidence	Wheatfield Way, United KingdomHQ checked Sep 30, 2026	201-500	400 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 30, 2026
10	Grayce	Indirect evidence	Manchester, United KingdomHQ checked Sep 30, 2026	501-1,000	376 contacts →
	Indirect evidence “Grayce partners with some of the world’s most ambitious organisations to help deliver change and transformation.” Source: RevenueBase Database · checked Sep 30, 2026
11	Tack TMI	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	345 contacts →
	Indirect evidence “With over 110 years of experience and expertise, Tack TMI is your Global Partner for meaningful learning experiences We have offices across the globe, delivering in 55+ countries…” Source: RevenueBase Database · checked Sep 30, 2026
12	Q5	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	344 contacts →
	Indirect evidence “Q5 is a global, award-winning management consultancy focused on building healthy, high-performing organisations.” Source: RevenueBase Database · checked Sep 30, 2026
13	Penna, An LHH Brand	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	342 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
14	PSD Group	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	335 contacts →
	Indirect evidence “PSD is a leading international executive recruitment consultancy, specialising in executive, management and board level recruitment with over 35 years of experience.” Source: RevenueBase Database · checked Sep 30, 2026
15	Ubique Systems	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	333 contacts →
	Partial evidence “Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Source: RevenueBase Database · checked Sep 30, 2026
16	Mercer UK	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	10001+	329 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 30, 2026
17	PGC	Indirect evidence	Uk, United KingdomHQ checked Sep 30, 2026	n/a	320 contacts →
	Indirect evidence “In 2018 PGC rebranded as Friisberg & Partners International +44 207 062 3603” Source: RevenueBase Database · checked Sep 30, 2026
18	Pareto	Indirect evidence	Wilmslow, United KingdomHQ checked Sep 30, 2026	201-500	297 contacts →
	Indirect evidence “Pareto partner globally with organisations to take people from learning to leading.” Source: RevenueBase Database · checked Sep 30, 2026
19	Sheffield Haworth	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	244 contacts →
	Indirect evidence “Sheffield Haworth is a global consultancy founded in 1993.” Source: RevenueBase Database · checked Sep 30, 2026
20	Dabster	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	222 contacts →
	Indirect evidence “Dabster is a Talent Management and Workforce Solutions Provider in Digital and Engineering practice.” Source: RevenueBase Database · checked Sep 30, 2026
21	Primed Talent UK	Indirect evidence	27 Old Gloucester Street, United KingdomHQ checked Sep 30, 2026	n/a	209 contacts →
	Indirect evidence “Primed Talent's journey began in 2009, establishing our first group company with a vision to bridge the skill gap in the market and create promising careers.” Source: RevenueBase Database · checked Sep 30, 2026
22	Adviserplus	Strong evidence	Ellesmere Port, United KingdomHQ checked Sep 30, 2026	201-500	205 contacts →
	Strong evidence “AdviserPlus is the UK’s leading provider of HR technology, consulting, and advisory services.” Source: RevenueBase Database · checked Sep 30, 2026
23	Join Talent	Indirect evidence	Brechin, United KingdomHQ checked Sep 30, 2026	201-500	200 contacts →
	Indirect evidence “Join Talent is a ‘talent acquisition as a service’ (TAaaS) business - dedicated to driving business scale up growth performance.” Source: RevenueBase Database · checked Sep 30, 2026
24	Omni RMS	Indirect evidence	Altrincham, United KingdomHQ checked Sep 30, 2026	51-200	190 contacts →
	Indirect evidence “Omni – Talent Is Everything At Omni, we help businesses find, attract, and retain the right people to drive long-term success.” Source: RevenueBase Database · checked Sep 30, 2026
25	Green Park	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	187 contacts →
	Indirect evidence “Green Park is a specialist executive search and advisory firm trusted by organisations seeking stronger, more future-ready leadership.” Source: RevenueBase Database · checked Sep 30, 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: HR consulting firms. 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 HR consulting firms.
Partial evidence: Its own public description names part of HR consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name HR consulting firms. 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 5,428 HR 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 16,158 reachable decision-makers.

Free signup · no credit card

View the full list →

HR consulting firms based in the United Kingdom at a glance

As of Sep 30, 2026

31.0%Verified-email coverage

8.1%Mobile-number coverage

9.6Average contacts per company

1-10Median size (employees)

31.2%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

4,400

11-50

795

51-200

148

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 33.0d

4,5950–30

10,89431–60

51161–90

1390–180

145180+

Company record updated

Median 83.0d

00–30

6,56131–60

20,71161–90

21,04090–180

3,731180+

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 HR consulting firms, 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 “HR consulting firms”. 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 HR consulting firms), 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 HR 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 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, 16,158 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 30, 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.

HR consulting firms by metro

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 HR consulting firms, 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 HR consulting firms are there based in the United Kingdom?

RevenueBase identified 5,428 HR 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?

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

Which city has the most HR consulting firms?

London leads with 1693 headquartered companies, followed by Manchester (120) and Bristol (78).

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 16,158 verified decision-maker contacts tracked across these 5,428 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,428 HR consulting firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

HR consulting firms by geography

Browse the directory

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.