Company lists · Data refreshed September 2026

Top 25 HR software professional services based in London, United Kingdom

Name: HR software professional services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 26, 2026 640 companies tracked

RevenueBase identified 640 HR software professional services headquartered in London, United Kingdom as of September 2026 and tracks 8,699 professional contacts across them, including 2,066 with verified work emails. London is the largest hub.

This list covers HR software professional services headquartered in London, 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 26, 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 26, 2026 86% judged on-target in blind review

640Companies

8,699Contacts tracked

2,066Verified emails

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The 25 largest HR software professional services based in London, United Kingdom

Ranked by team size

Top 25 of 640 HR software professional services based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 26, 2026. RevenueBase Smart Search rates how each company's information relates to HR software professional services: 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	NGA Human Resources, An Alight Company	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	1,001-5,000	2,734 contacts →
	Partial evidence “At Alight \| NGA Human Resources our mission is to make HR work better.” Source: RevenueBase Database · checked Sep 26, 2026
2	Giant Group	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	5,001-10,000	420 contacts →
	Partial evidence “Since 1992 Giant have provided specialist, end to end workforce management software and support services to large and small recruitment agencies, internationally.” Source: RevenueBase Database · checked Sep 26, 2026
3	Ubique Systems	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	501-1,000	333 contacts →
	Indirect 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 26, 2026
4	Huntress	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	289 contacts →
	Indirect evidence “Since our establishment in Huntress has been at the forefront of recruitment across a range of specialist sectors.” Source: RevenueBase Database · checked Sep 26, 2026
5	Brain Payroll	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	173 contacts →
	Partial evidence “A cloud based online software that provides Intuitive and comprehensive solutions integrated with impeccable management of employees payroll processing in real-time.” Source: RevenueBase Database · checked Sep 26, 2026
6	PLUMM	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	n/a	155 contacts →
	Partial evidence “Plumm is the next-generation HR platform designed to replace your patchwork of tools with one powerful, integrated system.” Source: RevenueBase Database · checked Sep 26, 2026
7	Playroll	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	151 contacts →
	Indirect evidence “Meet Playroll - your all-in-one workforce management platform.” Source: RevenueBase Database · checked Sep 26, 2026
8	Veran Performance	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	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 26, 2026
9	Cezanne HR	Strong evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	127 contacts →
	Strong evidence “Cezanne HR is leading the way in delivering smart, sophisticated and cost-effective Cloud HR and Native payroll software to UK and international businesses.” Source: RevenueBase Database · checked Sep 26, 2026
10	Omnipresent	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	124 contacts →
	Indirect evidence “Omnipresent was acquired by Deel in October of 2025.” Source: RevenueBase Database · checked Sep 26, 2026
11	kpi.com	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	87 contacts →
	Indirect evidence “KPI is an all-in-one business solution providing: Accounting, Payroll, Sales, Human Resources, Project Management, Report and Document applications all in one platform according…” Source: RevenueBase Database · checked Sep 26, 2026
12	Jibble	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	68 contacts →
	Partial evidence “Jibble Group builds HR SaaS products.” Source: RevenueBase Database · checked Sep 26, 2026
13	SCEDE	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	64 contacts →
	Indirect evidence “Scede is a trusted scaling partner for tech companies globally, offering a breadth of talent acquisition, people operations and training services, designed to solve key growth…” Source: RevenueBase Database · checked Sep 26, 2026
14	Oakleaf Partnership	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	57 contacts →
	Partial evidence “Since 2005, Oakleaf Partnership has been successfully placing people into jobs across every HR discipline, in every sector imaginable.” Source: RevenueBase Database · checked Sep 26, 2026
15	Hunter Adams	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	53 contacts →
	Partial evidence “Hunter Adams is an employee-owned HR consultancy, Interim and recruitment business.” Source: RevenueBase Database · checked Sep 26, 2026
16	Warriorz Technologies	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	201-500	51 contacts →
	Partial evidence “In a highly technical industry of Information Technology, Warriorz Technologies Ltd is paving the way in Human Resource and Software consulting across the globe.” Source: RevenueBase Database · checked Sep 26, 2026
17	HR Grapevine	Strong evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	49 contacts →
	Strong evidence “HR Grapevine is the leading digital resource for HR professionals.” Source: RevenueBase Database · checked Sep 26, 2026
18	Project Recruit	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	45 contacts →
	Indirect evidence “At Project Recruit, getting to know our clients is at the heart of what we do.” Source: RevenueBase Database · checked Sep 26, 2026
19	BIS Recruit	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	n/a	45 contacts →
	Indirect evidence “Founded in 2004, Bis Recruit is a founder-led London recruitment agency run by Founding Directors Sue Inman and Chrys Street, both of whom still remain involved in the day to day…” Source: RevenueBase Database · checked Sep 26, 2026
20	Healthboxhr	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	40 contacts →
	Partial evidence “Embracing innovative technology and user simplicity, HealthBoxHR has developed a revolutionary, future-proof global HR and payroll solution.” Source: RevenueBase Database · checked Sep 26, 2026
21	Fitzgerald	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	38 contacts →
	Partial evidence “We’re the full-service HR consultancy that synchronises seamlessly with your business.” Source: RevenueBase Database · checked Sep 26, 2026
22	Whitecollars	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	35 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 26, 2026
23	The Opra Group	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	34 contacts →
	Indirect evidence “The OPRA Group provides a complete portfolio of People Solutions designed to help organisations make confident, consistent, and future‑focused decisions.” Source: RevenueBase Database · checked Sep 26, 2026
24	Bradley & CO	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	33 contacts →
	Partial evidence “Bradley & Co are fully indemnified business & HR strategy experts, supplying businesses with the services they need to run smoothly.” Source: RevenueBase Database · checked Sep 26, 2026
25	ZELT	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	31 contacts →
	Partial evidence “Zelt is the UK's leading native all-in-one HR and Finance platform, built to give mid-sized businesses the tools they need to manage, pay, and grow their people.” Source: RevenueBase Database · checked Sep 26, 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 software professional services. 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 software professional services.
Partial evidence: Its own public description names part of HR software professional services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name HR software professional services. 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 640 HR software professional services based in London, United Kingdom

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HR software professional services based in London, United Kingdom at a glance

As of Sep 26, 2026

23.7%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

465

11-50

125

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 640 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 HR software professional services, 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 London, United Kingdom whose own description of what they do matches “HR software professional services”. 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 software professional services), 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 software professional services, and records with no verified work email. Companies headquartered outside London 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, 2,066 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 26, 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 software professional services by metro in the United Kingdom

HR software professional services in London640
HR software professional services in Manchester74
HR software professional services in Leeds36
HR software professional services in Bristol35
HR software professional services in Birmingham34
HR software professional services in Glasgow34
HR software professional services in Edinburgh25

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 software professional services, 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 software professional services are there based in London, United Kingdom?

RevenueBase identified 640 HR software professional services headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

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

Which city has the most HR software professional services?

London leads with 640 headquartered companies, followed by Manchester (74) and Leeds (36).

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 2,066 verified decision-maker contacts tracked across these 640 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 26, 2026.

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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 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.