Company lists · Data refreshed September 2026
Top 25 Human resources outsourcing firms based in London, United Kingdom
RevenueBase identified 357 company matches for human resources outsourcing firms associated with London, United Kingdom as of September 2026 and tracks 5,150 professional contacts across them, including 800 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for human resources outsourcing firms associated with London, 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 28, 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.
The 25 largest human resources outsourcing firms based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,734 contacts → | ||||
Exact match “At Alight | NGA Human Resources our mission is to make HR work better.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 333 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 28, 2026 · View company records in RevenueBase | |||||
| 3 | 311 contacts → | ||||
Exact match “GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 57 contacts → | ||||
Exact match “Since 2005, Oakleaf Partnership has been successfully placing people into jobs across every HR discipline, in every sector imaginable.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 53 contacts → | ||||
Exact match “Hunter Adams is an employee-owned HR consultancy, Interim and recruitment business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 51 contacts → | ||||
Exact match “In a highly technical industry of Information Technology, Warriorz Technologies Ltd is paving the way in Human Resource and Software consulting across the globe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 45 contacts → | ||||
Exact match “At Project Recruit, getting to know our clients is at the heart of what we do.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 41 contacts → | ||||
Exact match “Welcome to Factotum-your secret weapon for streamlined business success!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 38 contacts → | ||||
Exact match “We’re the full-service HR consultancy that synchronises seamlessly with your business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 35 contacts → | ||||
Exact match “We are Whitecollars, the global Human Resource consulting and recruitment agency that supports your business growth with affordable, flat-fee recruitment solutions and tailored HR…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 28 contacts → | ||||
Exact match “Welcome to JourneyHR.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 26 contacts → | ||||
Exact match “Atrium is the only human resources company to offer a one-stop solution for organisations to manage their globally mobile work force…no matter where they are stationed throughout…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 19 contacts → | ||||
Exact match “QUANTIC GLOBAL was founded to mitigate acquisition challenges posed by the dynamic evolution of the economic landscape.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 18 contacts → | ||||
Exact match “Expert HR consulting and support services for you to develop the performance you want in your business and address the issues you don’t!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 18 contacts → | ||||
Exact match “Hire reliable, experienced, overseas staff for one third of the cost, hassle free and fast.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 16 contacts → | ||||
Exact match “Kimon Services provides high-quality outsourced staff across various industries and disciplines, including customer service, data entry, call centres, marketing and sales support…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 15 contacts → | ||||
Exact match “Sourcing and recruiting the best HR talent since 1979 With offices in London, Manchester and Birmingham we have a strong regional presence across the UK and EMEA, with a growing…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 15 contacts → | ||||
Exact match “Causeway Connect is a multi-disciplinary remote-staffing firm for the modern fast-growth business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 13 contacts → | ||||
Exact match “AT FRILLSOFT, WE STRIVE FOR EXCELLENCE.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 12 contacts → | ||||
Exact match “We offer retained HR Support to forward-thinking employers, and deliver a premium HR Support service, which includes: 24/7 access to a dedicated Director/Partner level Solicitor…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 12 contacts → | ||||
Exact match “We bring our extensive industry experience to the hum-drum of finance, HR, operations, marketing and compliance so that you can focus on delivering the fun to your customers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 11 contacts → | ||||
Exact match “SIBIOS Industry Technology Resources is a Consulting firm within Workforce Management, established to focus on delivering Human Resources solutions within a number of technical…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 10 contacts → | ||||
Exact match “McLean HR offer practical, flexible and tailored HR services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 10 contacts → | ||||
Exact match “Bespoke human resources solutions tailored to suit any business, at any stage.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 10 contacts → | ||||
Exact match “Award winning HR Practice DOHR provides specialist HR services to employers across London and the Northern Home Counties.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “human resources outsourcing firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 357 human resources outsourcing firms based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 800 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Human resources outsourcing firms based in London, United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 357 companies.
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 London, United Kingdom whose business descriptions match “human resources outsourcing firms” 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 800 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 28, 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.
Human resources outsourcing firms by metro in the United Kingdom
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 “human resources outsourcing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many human resources outsourcing firms are there based in London, United Kingdom?
RevenueBase identified 357 company matches for human resources outsourcing firms associated with London, 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 in the United Kingdom has the most human resources outsourcing firms?
London leads the United Kingdom with 357 company records, followed by Manchester (37) and Bristol (23).
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 800 professional contacts with verified work emails tracked across these 357 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 357 human resources outsourcing firms based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Human resources outsourcing firms by geography
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil
- Human resources outsourcing firms based in Campinas, Brazil
- Human resources outsourcing firms based in Curitiba, Brazil
- Human resources outsourcing firms based in Porto Alegre, Brazil
- Human resources outsourcing firms based in Rio De Janeiro, Brazil
- Human resources outsourcing firms based in Sao Paulo, Brazil
- Human resources outsourcing firms based in Sofia, Bulgaria
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 human resources outsourcing firms based in London, United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 357 matching company records for human resources outsourcing firms based in London, United Kingdom, with 5,150 tracked contacts and 800 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 human resources outsourcing firms based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Ubique Systemsubique-systems.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 333 contacts → |
“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  GI Outsourcinggioutsourcing.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Oakleaf Partnershipoakleafpartnership.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Since 2005, Oakleaf Partnership has been successfully placing people into jobs across every HR discipline, in every sector imaginable.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Hunter Adamshunteradams.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 53 contacts → |
“Hunter Adams is an employee-owned HR consultancy, Interim and recruitment business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Warriorz Technologieswarriorzinfotech.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 51 contacts → |
“In a highly technical industry of Information Technology, Warriorz Technologies Ltd is paving the way in Human Resource and Software consulting across the globe.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Project Recruitprojectrecruit.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 45 contacts → |
“At Project Recruit, getting to know our clients is at the heart of what we do.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Factotumfactotum.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 41 contacts → |
“Welcome to Factotum-your secret weapon for streamlined business success!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Fitzgeraldfitzgeraldhr.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 38 contacts → |
“We’re the full-service HR consultancy that synchronises seamlessly with your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Whitecollarswhitecollars.netHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 35 contacts → |
“We are Whitecollars, the global Human Resource consulting and recruitment agency that supports your business growth with affordable, flat-fee recruitment solutions and tailored HR…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Journeyhrjourneyhr.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Welcome to JourneyHR.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Atrium HR Consultingatriumhr.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 26 contacts → |
“Atrium is the only human resources company to offer a one-stop solution for organisations to manage their globally mobile work force…no matter where they are stationed throughout…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Quantic Global LTDquanticglobal.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 19 contacts → |
“QUANTIC GLOBAL was founded to mitigate acquisition challenges posed by the dynamic evolution of the economic landscape.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Lighterhrlighterhr.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 18 contacts → |
“Expert HR consulting and support services for you to develop the performance you want in your business and address the issues you don’t!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Hotsourcedhotsourced.ioHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 18 contacts → |
“Hire reliable, experienced, overseas staff for one third of the cost, hassle free and fast.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Kimon Serviceskimonservices.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 16 contacts → |
“Kimon Services provides high-quality outsourced staff across various industries and disciplines, including customer service, data entry, call centres, marketing and sales support…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Macmillan Daviesmdhr.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Sourcing and recruiting the best HR talent since 1979 With offices in London, Manchester and Birmingham we have a strong regional presence across the UK and EMEA, with a growing…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Causeway Connectcausewayconnect.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 15 contacts → |
“Causeway Connect is a multi-disciplinary remote-staffing firm for the modern fast-growth business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Frillsoftfrillsoft.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“AT FRILLSOFT, WE STRIVE FOR EXCELLENCE.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Mccarthy Employment Solicitorsmccarthy.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 12 contacts → |
“We offer retained HR Support to forward-thinking employers, and deliver a premium HR Support service, which includes: 24/7 access to a dedicated Director/Partner level Solicitor…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  IH Solutionsih.solutionsHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“We bring our extensive industry experience to the hum-drum of finance, HR, operations, marketing and compliance so that you can focus on delivering the fun to your customers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sibiossibios-it.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“SIBIOS Industry Technology Resources is a Consulting firm within Workforce Management, established to focus on delivering Human Resources solutions within a number of technical…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Mclean HRmcleanhr.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“McLean HR offer practical, flexible and tailored HR services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Pace HRpace-hr.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Bespoke human resources solutions tailored to suit any business, at any stage.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Dohr LTDdohr.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Award winning HR Practice DOHR provides specialist HR services to employers across London and the Northern Home Counties.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 357 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Human resources outsourcing firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
357 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 357 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Human resources outsourcing firms by metro in the United Kingdom
Questions about this company list
What does Exact match mean for human resources outsourcing firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many human resources outsourcing firms did RevenueBase find based in London, United Kingdom?
The saved snapshot records 357 matching company records, 5,150 tracked contacts and 800 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Human resources outsourcing firms by geography
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil
- Human resources outsourcing firms based in Campinas, Brazil
- Human resources outsourcing firms based in Curitiba, Brazil
- Human resources outsourcing firms based in Porto Alegre, Brazil
- Human resources outsourcing firms based in Rio De Janeiro, Brazil
- Human resources outsourcing firms based in Sao Paulo, Brazil
- Human resources outsourcing firms based in Sofia, Bulgaria
Cite this list
RevenueBase Data Team. Top 25 human resources outsourcing firms based in London, United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/human-resources-outsourcing-firms/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 human resources outsourcing firms based in London, United Kingdom
RevenueBase records 357 matching company records for human resources outsourcing firms based in London, United Kingdom, with 5,150 tracked contacts and 800 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 human resources outsourcing firms based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ubique Systemsubique-systems.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 333 contacts → |
“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | GI Outsourcinggioutsourcing.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Oakleaf Partnershipoakleafpartnership.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Since 2005, Oakleaf Partnership has been successfully placing people into jobs across every HR discipline, in every sector imaginable.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Hunter Adamshunteradams.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 53 contacts → |
“Hunter Adams is an employee-owned HR consultancy, Interim and recruitment business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Warriorz Technologieswarriorzinfotech.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 51 contacts → |
“In a highly technical industry of Information Technology, Warriorz Technologies Ltd is paving the way in Human Resource and Software consulting across the globe.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Project Recruitprojectrecruit.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 45 contacts → |
“At Project Recruit, getting to know our clients is at the heart of what we do.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Factotumfactotum.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 41 contacts → |
“Welcome to Factotum-your secret weapon for streamlined business success!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Fitzgeraldfitzgeraldhr.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 38 contacts → |
“We’re the full-service HR consultancy that synchronises seamlessly with your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Whitecollarswhitecollars.net HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 35 contacts → |
“We are Whitecollars, the global Human Resource consulting and recruitment agency that supports your business growth with affordable, flat-fee recruitment solutions and tailored HR…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Journeyhrjourneyhr.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Welcome to JourneyHR.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Atrium HR Consultingatriumhr.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 26 contacts → |
“Atrium is the only human resources company to offer a one-stop solution for organisations to manage their globally mobile work force…no matter where they are stationed throughout…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Quantic Global LTDquanticglobal.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 19 contacts → |
“QUANTIC GLOBAL was founded to mitigate acquisition challenges posed by the dynamic evolution of the economic landscape.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Lighterhrlighterhr.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 18 contacts → |
“Expert HR consulting and support services for you to develop the performance you want in your business and address the issues you don’t!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Hotsourcedhotsourced.io HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 18 contacts → |
“Hire reliable, experienced, overseas staff for one third of the cost, hassle free and fast.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Kimon Serviceskimonservices.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 16 contacts → |
“Kimon Services provides high-quality outsourced staff across various industries and disciplines, including customer service, data entry, call centres, marketing and sales support…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Macmillan Daviesmdhr.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Sourcing and recruiting the best HR talent since 1979 With offices in London, Manchester and Birmingham we have a strong regional presence across the UK and EMEA, with a growing…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Causeway Connectcausewayconnect.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 15 contacts → |
“Causeway Connect is a multi-disciplinary remote-staffing firm for the modern fast-growth business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Frillsoftfrillsoft.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“AT FRILLSOFT, WE STRIVE FOR EXCELLENCE.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Mccarthy Employment Solicitorsmccarthy.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 12 contacts → |
“We offer retained HR Support to forward-thinking employers, and deliver a premium HR Support service, which includes: 24/7 access to a dedicated Director/Partner level Solicitor…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | IH Solutionsih.solutions HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“We bring our extensive industry experience to the hum-drum of finance, HR, operations, marketing and compliance so that you can focus on delivering the fun to your customers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sibiossibios-it.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“SIBIOS Industry Technology Resources is a Consulting firm within Workforce Management, established to focus on delivering Human Resources solutions within a number of technical…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Mclean HRmcleanhr.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“McLean HR offer practical, flexible and tailored HR services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Pace HRpace-hr.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Bespoke human resources solutions tailored to suit any business, at any stage.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Dohr LTDdohr.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Award winning HR Practice DOHR provides specialist HR services to employers across London and the Northern Home Counties.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 357 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Human resources outsourcing firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
357 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 357 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Human resources outsourcing firms by metro in the United Kingdom
Questions about this company list
What does Exact match mean for human resources outsourcing firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many human resources outsourcing firms did RevenueBase find based in London, United Kingdom?
The saved snapshot records 357 matching company records, 5,150 tracked contacts and 800 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Human resources outsourcing firms by geography
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil
- Human resources outsourcing firms based in Campinas, Brazil
- Human resources outsourcing firms based in Curitiba, Brazil
- Human resources outsourcing firms based in Porto Alegre, Brazil
- Human resources outsourcing firms based in Rio De Janeiro, Brazil
- Human resources outsourcing firms based in Sao Paulo, Brazil
- Human resources outsourcing firms based in Sofia, Bulgaria
Cite this list
RevenueBase Data Team. Top 25 human resources outsourcing firms based in London, United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/human-resources-outsourcing-firms/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Human resources outsourcing firms based in Buenos Aires, Argentina
- Human resources outsourcing firms based in Brisbane, Australia
- Human resources outsourcing firms based in Melbourne, Australia
- Human resources outsourcing firms based in Perth, Australia
- Human resources outsourcing firms based in Sydney, Australia
- Human resources outsourcing firms based in Belo Horizonte, Brazil