Company lists · Data refreshed September 2026

Top 23 Human resources software developers based in London, United Kingdom

Name: Human resources software developers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 53 companies tracked

RevenueBase identified 53 company matches for human resources software developers associated with London, United Kingdom as of September 2026 and tracks 4,020 professional contacts across them, including 496 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for human resources software developers 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

53Companies

4,020Contacts tracked

496Verified emails

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The 23 largest human resources software developers based in London, United Kingdom

Ranked by team size

Top 23 of 53 company matches for human resources software developers based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	NGA Human Resources, An Alight Company	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	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	Giant Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	5,001-10,000	420 contacts →
	Exact match “Since 1992 Giant have provided specialist, end to end workforce management software and support services to large and small recruitment agencies, internationally.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	PLUMM	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	155 contacts →
	Exact match “Plumm is the next-generation HR platform designed to replace your patchwork of tools with one powerful, integrated system.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Cezanne HR	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	127 contacts →
	Exact match “Cezanne HR is leading the way in delivering smart, sophisticated and cost-effective Cloud HR and Native payroll software to UK and international businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Omnipresent	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	124 contacts →
	Exact match “Omnipresent was acquired by Deel in October of 2025.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	kpi.com	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	87 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Jibble	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	68 contacts →
	Exact match “Jibble Group builds HR SaaS products.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Healthboxhr	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	40 contacts →
	Exact match “Embracing innovative technology and user simplicity, HealthBoxHR has developed a revolutionary, future-proof global HR and payroll solution.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Zenithr	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	20 contacts →
	Exact match “Zenithr is a leading provider of HR technology and intelligence solutions, committed to enhancing talent management and development for businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	GO Enterprise HR Software	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	14 contacts →
	Exact match “Go Enterprise HR: The Ultimate All-in-One HR Solution for Growing Businesses HR doesn’t have to be complicated.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Hubbubhr	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	12 contacts →
	Exact match “HubbubHR is proven, future-ready, Azure-secure enterprise people & AI tech built for what’s next Big legacy HR/ERP systems introduce rigidity, exorbitant cost, and delay.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Walkzero	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	12 contacts →
	Exact match “Walkzero, is developing an AI-driven Human Resource Management System (HRMS) to help small and medium-sized enterprises (SMEs) streamline their HR processes, enhance employee…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Exelsys LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Exelsys provides an integrated collaborative Human Capital Management System, enterprises need to manage the full hire-to-retire process for both full-time and part-time employees…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Upstrax	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “At Upstrax, we're revolutionizing the way businesses manage their most valuable asset-their people.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Rethink HR LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “As HR professionals, you put your people first, not your tech.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Petaurum HR	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	5 contacts →
	Exact match “Petaurum HR is an award-winning provider of people and commercial solutions, supporting growing companies as well as those facing change.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	ehubt.io	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	3 contacts →
	Exact match “eHubt.io offers innovative HR and business solutions designed to streamline workforce management, enhance employee engagement, and optimize business performance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Culabr	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Maximising Recruiter Performance with game-changing software.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Volante Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Volante Group is first and foremost a Human Capital Management solutions provider, with an emphasis on Talent Capture.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Spoke Innovation LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Spoke works with HCM software vendors to get product and messaging right.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Gigsasa	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Gigsasa stands as the foremost HR software provider that drives the transformation of HR strategies within small and medium-sized enterprises.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Nailbourne Software	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “nailbourne software is a new startup that specialises in software integration.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Windmill Technologies	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “Windmill is dedicated to empowering individuals and organisations by seamlessly integrating human resources with cutting-edge technology.” 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 software developers”. 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 23 of 53 human resources software developers based in London, United Kingdom

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Human resources software developers based in London, United Kingdom at a glance

As of Sep 28, 2026

12.3%Verified-email coverage

75.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 53 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 software developers” 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 496 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.

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 software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many human resources software developers are there based in London, United Kingdom?

RevenueBase identified 53 company matches for human resources software developers 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 software developers?

London leads the United Kingdom with 53 company records, followed by Manchester (10) and Bristol (4).

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 496 professional contacts with verified work emails tracked across these 53 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.

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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.