Company lists · Data refreshed September 2026
Top 25 Employee data platforms based in London, United Kingdom
RevenueBase identified 82 employee data platforms headquartered in London, United Kingdom as of September 2026 and tracks 4,107 professional contacts across them, including 698 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers employee data platforms 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 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest employee data platforms based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,734 contacts → | ||||
Indirect evidence “At Alight | NGA Human Resources our mission is to make HR work better.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 127 contacts → | ||||
Indirect 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 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 124 contacts → | ||||
Indirect evidence “Omnipresent was acquired by Deel in October of 2025.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 87 contacts → | ||||
Partial 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 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 68 contacts → | ||||
Indirect evidence “Jibble Group builds HR SaaS products.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 41 contacts → | ||||
Strong evidence “The People Development Platform | Employee learning, development and performance management Learn Amp is a learning technology company headquarted in London with customers located…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 40 contacts → | ||||
Indirect evidence “Embracing innovative technology and user simplicity, HealthBoxHR has developed a revolutionary, future-proof global HR and payroll solution.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 34 contacts → | ||||
Indirect evidence “The Happiness Index gives insights into why your people leave or stay, what drives productivity, and how that impacts your bottom line.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 31 contacts → | ||||
Indirect evidence “We've moved!” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Indirect evidence “Zenithr is a leading provider of HR technology and intelligence solutions, committed to enhancing talent management and development for businesses.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 contacts → | ||||
Partial evidence “Konfir securely removes the administrative burden companies face when completing employment and income verifications.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Indirect evidence “Many growing organisations face the same problem.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 15 contacts → | ||||
Indirect evidence “Tomorrow’s workforce needs to be agile, skilled and sustainable.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Indirect evidence “Go Enterprise HR: The Ultimate All-in-One HR Solution for Growing Businesses HR doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Indirect evidence “Since 1983, Wealden has been providing industry-leading HR, Payroll and Time & Attendance solutions to clients as diverse as government bodies, international groups, schools and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 12 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Indirect evidence “Take control of your contingent workforce with Giant Precision.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Indirect evidence “Bullhorn Analytics helps staffing firms to achieve highly scalable growth.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “Transforming HR with Smart Automation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Indirect evidence “Reinventing Reward.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: employee data platforms. 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 employee data platforms.
- Partial evidence
- Its own public description names part of employee data platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name employee data platforms. 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 82 employee data platforms based in London, United Kingdom
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Employee data platforms 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 82 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 employee data platforms, 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 “employee data platforms”. 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 employee data platforms), 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 employee data platforms, 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, 698 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 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names employee data platforms, 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 employee data platforms are there based in London, United Kingdom?
RevenueBase identified 82 employee data platforms 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 in the United Kingdom has the most employee data platforms?
London leads the United Kingdom with 82 headquartered companies, followed by Leeds (7) and Manchester (6).
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 698 verified decision-maker contacts tracked across these 82 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 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 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.
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