Company lists · Data refreshed September 2026
Top 25 UK HR consulting firms based in the United Kingdom
RevenueBase identified 2,915 UK HR consulting firms headquartered in the United Kingdom as of September 2026 and tracks 23,132 professional contacts across them, including 5,421 with verified work emails. London is the largest hub.
This list covers UK 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 29, 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.
The 25 largest UK HR consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,423 contacts → | ||||
Indirect evidence “Robert Walters is the world’s most trusted talent solutions business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,075 contacts → | ||||
Partial evidence “Peninsula is the worldwide leader and most trusted provider of employment law, HR and health & safety services, supporting over small businesses in the U.K.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 410 contacts → | ||||
Indirect evidence “Aldelia is a world leading Human Resources advisory firm, leader in professional recruitment services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 342 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 291 contacts → | ||||
Strong evidence “Siamo Group is an award-winning company providing UK-wide personnel services, strategically combining a complete recruitment service with integrated training, HR, payroll and IT…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 244 contacts → | ||||
Partial evidence “EST are a multi service professional practice offering HR Consultancy, Accountancy & Tax advice and Commercial Finance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 231 contacts → | ||||
Indirect evidence “ASA Recruitment are committed to delivering a first class service to businesses, industry and local government in a wide variety of sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 186 contacts → | ||||
Indirect evidence “On 30th April 2023 Encore is going to become Gi Group and will be rebranded as such.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 169 contacts → | ||||
Partial evidence “Welcome to The HR Dept.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 167 contacts → | ||||
Indirect evidence “We’re a leading people advisory consultancy that partners with you to source great executives, assess and develop leadership capabilities and expedite change and transformation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 155 contacts → | ||||
Indirect evidence “People first.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 134 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 129 contacts → | ||||
Partial evidence “Overview LACE Partners is trusted advisors to HR and business leaders navigating complex workforce challenges.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 127 contacts → | ||||
Strong evidence “Avensure provides UK businesses with bespoke outsourced HR, Employment Law, and Health & Safety services, built around the principle that protection is personal.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 127 contacts → | ||||
Indirect evidence “We specialise in developing and delivering people practices and performance during an organisation’s critical periods of growth, transition or change where practices that have…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 102 contacts → | ||||
Partial evidence “SERVICE > COMPLIANCE > ADDED VALUE The UK's 13th fastest growing recruiter.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 101 contacts → | ||||
Indirect evidence “VMA Group delivers talent solutions that shape and elevate teams globally.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 100 contacts → | ||||
Indirect evidence “We’re on a mission to make the world of work a happier place, one candidate at a time.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 97 contacts → | ||||
Indirect evidence “Established in 1993, Macildowie is a market leading recruitment firm, specialising in Human Resources, Accountancy & Finance, Procurement & Supply Chain, Office & Commercial…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 91 contacts → | ||||
Partial evidence “A1 Personnel is a professional recruitment management consultancy established in 1988 offering both temporary and permanent recruitment solutions for businesses across the UK and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 87 contacts → | ||||
Partial evidence “Since 2010, Stanton House has supported organisations across the UK and North America to innovate, transform and grow by connecting them with specialist talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 84 contacts → | ||||
Partial evidence “Spectra is a well-established H&S And HR consultancy business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 84 contacts → | ||||
Indirect evidence “Envertiz Consultancy bridges global talent with leading employers across healthcare, IT, engineering, finance, and other key sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 80 contacts → | ||||
Indirect evidence “Follow us for the latest career opportunities, market analysis and insight.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: UK 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 UK HR consulting firms.
- Partial evidence
- Its own public description names part of UK 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 UK 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 2,915 UK 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 5,421 reachable decision-makers.
Free signup · no credit card
UK HR consulting firms based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 2,915 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 UK 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 “UK 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 UK 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 UK 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, 5,421 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 29, 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.
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 UK 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 UK HR consulting firms are there based in the United Kingdom?
RevenueBase identified 2,915 UK 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 UK HR consulting firms?
London leads with 676 headquartered companies, followed by Manchester (82) and Leeds (49).
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 5,421 verified decision-maker contacts tracked across these 2,915 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,915 UK HR consulting firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
UK HR consulting firms by geography
- UK HR consulting firms based in Buenos Aires, Argentina
- UK HR consulting firms based in Adelaide, Australia
- UK HR consulting firms based in Brisbane, Australia
- UK HR consulting firms based in Melbourne, Australia
- UK HR consulting firms based in Perth, Australia
- UK HR consulting firms based in Sydney, Australia
- UK HR consulting firms based in Vienna, Austria
- UK HR consulting firms based in Belo Horizonte, Brazil
- UK HR consulting firms based in Campinas, Brazil
- UK HR consulting firms based in Curitiba, Brazil
- UK HR consulting firms based in Porto Alegre, Brazil
- UK HR consulting firms based in Rio De Janeiro, Brazil
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- UK HR consulting firms based in Buenos Aires, Argentina
- UK HR consulting firms based in Adelaide, Australia
- UK HR consulting firms based in Brisbane, Australia
- UK HR consulting firms based in Melbourne, Australia
- UK HR consulting firms based in Perth, Australia
- UK HR consulting firms based in Sydney, Australia