Company lists · Data refreshed September 2026

Top 25 Professional services software companies based in the United Kingdom

Name: Professional services software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 418 companies tracked

RevenueBase identified 418 professional services software companies headquartered in the United Kingdom as of September 2026 and tracks 3,497 professional contacts across them, including 1,327 with verified work emails. London is the largest hub.

This list covers professional services software companies headquartered in the 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 21, 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 21, 2026 86% judged on-target in blind review

418Companies

3,497Contacts tracked

1,327Verified emails

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The 25 largest professional services software companies based in the United Kingdom

Ranked by team size

Top 25 of 418 professional services software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to professional services software companies: 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	Bighand	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	415 contacts →
	Indirect evidence “BigHand is the specialist technology partner for the business of law and the performance engine within the firm.” Source: RevenueBase Database · checked Sep 21, 2026
2	Dayshape	Partial evidence	Edinburgh, United KingdomHQ checked Sep 21, 2026	51-200	148 contacts →
	Partial evidence “Dayshape delivers leading resource management software designed to help organizations achieve extraordinary results.” Source: RevenueBase Database · checked Sep 21, 2026
3	CMAP	Partial evidence	Alderley Edge, United KingdomHQ checked Sep 21, 2026	51-200	139 contacts →
	Partial evidence “Operations and intelligence engine for professional services firms.” Source: RevenueBase Database · checked Sep 21, 2026
4	Netbuilder	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	107 contacts →
	Partial evidence “NETbuilder is a leading provider of specialist software, consulting, and fully managed services to Government, Finance, Healthcare, Education, and Commercial markets.” Source: RevenueBase Database · checked Sep 21, 2026
5	kpi.com	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
6	DPS Software	Partial evidence	Enfield, United KingdomHQ checked Sep 21, 2026	51-200	73 contacts →
	Partial evidence “Founded 30 years ago, DPS Software are one of the UK’s leading providers of practice management software for legal businesses.” Source: RevenueBase Database · checked Sep 21, 2026
7	TIKIT	Partial evidence	London London, United KingdomHQ checked Sep 21, 2026	201-500	59 contacts →
	Partial evidence “Tikit is a leading provider of innovative and specialist technology to the Legal and Professional services sector with over 1500 law firm clients globally and is part of BT Group.” Source: RevenueBase Database · checked Sep 21, 2026
8	Passle	Partial evidence	Oxford, United KingdomHQ checked Sep 21, 2026	11-50	53 contacts →
	Partial evidence “Passle powers growth at the world's leading professional services firms, including Ropes & Gray, Linklaters, Quinn Emanuel and many more.” Source: RevenueBase Database · checked Sep 21, 2026
9	Warrgyizmorsch	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	51 contacts →
	Indirect evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 21, 2026
10	QUILL	Partial evidence	Manchester, United KingdomHQ checked Sep 21, 2026	51-200	50 contacts →
	Partial evidence “Quill offers legal accounting, practice and document management software for the smart law firm.” Source: RevenueBase Database · checked Sep 21, 2026
11	SOS Legal	Partial evidence	Bath, United KingdomHQ checked Sep 21, 2026	51-200	48 contacts →
	Partial evidence “SOS Legal, now incorporating Linetime legal software, continues to solidify its position as a leading provider of legal software solutions for enterprise law firms (150+ users)…” Source: RevenueBase Database · checked Sep 21, 2026
12	Leap Legal Software UK	Indirect evidence	Twickenham, United KingdomHQ checked Sep 21, 2026	51-200	48 contacts →
	Indirect evidence “LEAP’s legal practice productivity solution leads the world in the delivery of state-of-the-art legal technology.” Source: RevenueBase Database · checked Sep 21, 2026
13	Silversoft	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	46 contacts →
	Partial evidence “Silversoft provides industry leading software to people and project centric firms globally with offices in the United Kingdom and South Africa & supporting over users across some…” Source: RevenueBase Database · checked Sep 21, 2026
14	Rödl & Partner UK	Indirect evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	n/a	37 contacts →
	Indirect evidence “Rödl & Partner – The agile caring partner for Mittelstand shaped world market leaders As attorneys, tax advisers, management and IT consultants and auditors, we are present with…” Source: RevenueBase Database · checked Sep 21, 2026
15	Phinsys Limited	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	35 contacts →
	Indirect evidence “Phinsys specialises in providing innovative solutions to insurance companies financial accounting, regulatory reporting and analytical needs.” Source: RevenueBase Database · checked Sep 21, 2026
16	Jayva Global	Partial evidence	Manchester, United KingdomHQ checked Sep 21, 2026	11-50	32 contacts →
	Partial evidence “Jayva Global provides a comprehensive range of consultancy and training services to law firms and professional service organisations throughout the UK, USA, Ireland, New Zealand…” Source: RevenueBase Database · checked Sep 21, 2026
17	RED River Software	Partial evidence	Horsham, United KingdomHQ checked Sep 21, 2026	11-50	30 contacts →
	Partial evidence “Keeping business ahead of the game" We're a software development company working with high-growth businesses, funded start-ups, investors, and organisations undergoing rapid…” Source: RevenueBase Database · checked Sep 21, 2026
18	WEB Alliance Limited	Indirect evidence	Northampton, United KingdomHQ checked Sep 21, 2026	11-50	30 contacts →
	Indirect evidence “Are you still using Cumbersome Excel Spreadsheets to manually track your leads, customers and invoices?” Source: RevenueBase Database · checked Sep 21, 2026
19	ARK IT Services	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	11-50	29 contacts →
	Partial evidence “At ARK IT Services, we focus on building practical software solutions that solve real business problems.” Source: RevenueBase Database · checked Sep 21, 2026
20	Goggle Software LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	29 contacts →
	Indirect evidence “We build bespoke job management and CRM systems for construction and field service businesses.” Source: RevenueBase Database · checked Sep 21, 2026
21	Nexian	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “nexian is a leading digital services provider dedicated to revolutionising professional service firms through innovative technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026
22	Concep	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “We live and breathe relationship marketing.” Source: RevenueBase Database · checked Sep 21, 2026
23	Eclipse Legal Systems	Partial evidence	Bradford, United KingdomHQ checked Sep 21, 2026	51-200	27 contacts →
	Partial evidence “Eclipse, an Access company, is the leading provider of Case Management, Practice Management, Matter Management and Process Management Software.” Source: RevenueBase Database · checked Sep 21, 2026
24	ISC Software Solutions LTD	Partial evidence	St. Ives, United KingdomHQ checked Sep 21, 2026	11-50	27 contacts →
	Partial evidence “We offer a comprehensive range of consulting, custom software development and support services to assist customers to improve efficiencies through automating processes, accessing…” Source: RevenueBase Database · checked Sep 21, 2026
25	Decent Group	Partial evidence	Swindon, United KingdomHQ checked Sep 21, 2026	11-50	23 contacts →
	Partial evidence “We create precisely the software you need to achieve your goals.” Source: RevenueBase Database · checked Sep 21, 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: professional services software companies. 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 professional services software companies.
Partial evidence: Its own public description names part of professional services software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional services software companies. 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 418 professional services software companies based in the United Kingdom

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Professional services software companies based in the United Kingdom at a glance

As of Sep 21, 2026

37.9%Verified-email coverage

8.4Average contacts per company

1-10Median size (employees)

30.4%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

269

11-50

112

51-200

201-500

501-1,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 418 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 professional services software companies, 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 the United Kingdom whose own description of what they do matches “professional services software companies”. 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 professional services software companies), 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 professional services software companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 1,327 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 21, 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.

Professional services software companies by metro

Professional services software companies in London127

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 professional services software companies, 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 professional services software companies are there based in the United Kingdom?

RevenueBase identified 418 professional services software companies headquartered in the 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?

Bighand, headquartered in London, tops this list with the largest team on record.

Which city has the most professional services software companies?

London leads with 127 headquartered companies, followed by Manchester (12) and Edinburgh (9).

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 1,327 verified decision-maker contacts tracked across these 418 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 21, 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.