Company lists · Data refreshed September 2026

Top 25 HR outsourcing services based in the United Kingdom

RevenueBase identified 2,128 company matches for HR outsourcing services associated with the United Kingdom as of September 2026 and tracks 18,966 professional contacts across them, including 5,522 with verified work emails and 1,365 with mobile numbers. London is the largest hub.

This list covers company matches for HR outsourcing services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 26, 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 RevenueBase SmartSearch · Exact Recorded Sep 26, 2026 How this list was built
2,128Companies
18,966Contacts tracked
5,522Verified emails
1,365Mobile numbers
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The 25 largest HR outsourcing services based in the United Kingdom

Ranked by team size
Top 25 of 2,128 company matches for HR outsourcing services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 26, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 26, 20261,001-5,0002,734 contacts →

Exact match

“At Alight | NGA Human Resources our mission is to make HR work better.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
2Exact matchBristol, United KingdomHQ recorded Sep 26, 20261,001-5,0001,465 contacts →

Exact match

“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Sep 26, 20261,001-5,0001,075 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
4Exact matchWeybridge, United KingdomHQ recorded Sep 26, 2026501-1,000532 contacts →

Exact match

“We are a leading service provider of Human Capital Management (HCM) solutions across Europe, serving more than 1.5 million employees monthly with an annual revenue of 78 million…”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
5Exact matchLightwater, United KingdomHQ recorded Sep 26, 2026201-500507 contacts →

Exact match

“Established in 1983, Frontier Software is an acknowledged leader in the provision of a global HR & Payroll software solution.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
6Exact matchWheatfield Way, United KingdomHQ recorded Sep 26, 2026201-500400 contacts →

Exact match

“Our award winning HR and health & safety services free you from workforce admin and help keep you on the right side of the law.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 26, 20265,001-10,000390 contacts →

Exact match

“Page Outsourcing was created to meet the business transformation needs of our clients.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 26, 2026501-1,000333 contacts →

Exact match

“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 26, 202651-200289 contacts →

Exact match

“Since our establishment in Huntress has been at the forefront of recruitment across a range of specialist sectors.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
10Exact matchEllesmere Port, United KingdomHQ recorded Sep 26, 2026201-500205 contacts →

Exact match

“AdviserPlus is the UK’s leading provider of HR technology, consulting, and advisory services.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
11Exact matchBristol, United KingdomHQ recorded Sep 26, 202651-200169 contacts →

Exact match

“Welcome to The HR Dept.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
12Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 26, 202651-200148 contacts →

Exact match

“Proudly based in the North East, our multi award-winning Payroll & HR service has been delivering professional payroll and HR solutions for over 40 years.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
13Exact matchSouth Bank, United KingdomHQ recorded Sep 26, 202651-200129 contacts →

Exact match

“Overview LACE Partners is trusted advisors to HR and business leaders navigating complex workforce challenges.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
14Exact matchManchester, United KingdomHQ recorded Sep 26, 202651-200127 contacts →

Exact match

“Avensure provides UK businesses with bespoke outsourced HR, Employment Law, and Health & Safety services, built around the principle that protection is personal.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 26, 202651-200124 contacts →

Exact match

“Omnipresent was acquired by Deel in October of 2025.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 26, 20261,001-5,000120 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
17Exact matchDuxford, United KingdomHQ recorded Sep 26, 202651-200116 contacts →

Exact match

“Better people, better business, better life.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
18Exact matchNorthampton, United KingdomHQ recorded Sep 26, 202651-200103 contacts →

Exact match

“At Talent Works, we’re changing the way RPO & MSP programs are accessed, delivered and deployed - delivering smarter, scalable talent solutions to help you build your future…”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 26, 2026201-500103 contacts →

Exact match

“we redefine business process outsourcing, empowering companies to broaden their horizons.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Sep 26, 20261,001-5,00099 contacts →

Exact match

“We’ve got a lot to offer our customers; global reach, local expertise, bags of commitment and a huge degree of flexibility and know-how.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
21Exact matchYork, United KingdomHQ recorded Sep 26, 202651-20090 contacts →

Exact match

“Imagining a global workforce is simple.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 26, 202651-20084 contacts →

Exact match

“UK businesses are under pressure- Hiring is slower- Costs are rising- And internal teams are stretched thin.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
23Exact matchKings Hill, United KingdomHQ recorded Sep 26, 202611-5076 contacts →

Exact match

“HR Connect, part of Commercial Services Group, work with you to drive your human resources strategy, complimenting your business approach.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
24Exact matchCalder Grove, United KingdomHQ recorded Sep 26, 202651-20074 contacts →

Exact match

“SAMpeople, SAMpeople Recruit and SAMpeople Payroll”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
25Exact matchHinton-in-the-hedges, United KingdomHQ recorded Sep 26, 202651-20073 contacts →

Exact match

“At The Curve Group we create extraordinary solutions that transform working lives by supporting organisations to design, develop and elevate Recruitment and HR functions.”

Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase

Showing 25 of 2,128 HR outsourcing services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 5,522 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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HR outsourcing services based in the United Kingdom at a glance

As of Sep 26, 2026
29.1%Verified-email coverage
7.2%Mobile-number coverage
8.9Average contacts per company
1-10Median size (employees)
22.9%Largest-city concentration · London
Sep 26, 2026Page data refreshed

Companies by employee count

1-10
1,704
11-50
297
51-200
72
201-500
21
501-1,000
8
1,001-5,000
13
5,001-10,000
3
10001+
2

Freshness & accuracy

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

Email last verified

Median 28.0d

Company record updated

Median 91.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “HR outsourcing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 5,522 professional contacts with verified work emails across the full matched dataset. 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 26, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “HR outsourcing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many HR outsourcing services are there based in the United Kingdom?

RevenueBase identified 2,128 company matches for HR outsourcing services associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

NGA Human Resources, An Alight Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most HR outsourcing services?

London leads with 487 company records, followed by Manchester (56) and Leeds (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,522 professional contacts with verified work emails tracked across these 2,128 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 26, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,128 HR outsourcing services based in the United Kingdom. Start with a free account, no credit card.

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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.