Company lists · Data refreshed September 2026

Top 25 Custom business software companies based in the United Kingdom

Name: Custom business 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 968 companies tracked

RevenueBase identified 968 custom business software companies headquartered in the United Kingdom as of September 2026 and tracks 8,049 professional contacts across them, including 2,223 with verified work emails. London is the largest hub.

This list covers custom business 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

968Companies

8,049Contacts tracked

2,223Verified emails

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The 25 largest custom business software companies based in the United Kingdom

Ranked by team size

Top 25 of 968 custom business 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 custom business 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	Kerridge Commercial Systems	Partial evidence	Hungerford, United KingdomHQ checked Sep 21, 2026	1,001-5,000	504 contacts →
	Partial evidence “Kerridge Commercial Systems provides specialist ERP, Business and Retail Management Software, Services and Support to Distributors, Wholesalers, Retailers and the Hiring industry.” Source: RevenueBase Database · checked Sep 21, 2026
2	Xperience	Indirect evidence	Lisburn, United KingdomHQ checked Sep 21, 2026	51-200	205 contacts →
	Indirect evidence “Unlock the full potential of your business with digital solutions built for you and with you.” Source: RevenueBase Database · checked Sep 21, 2026
3	Softbrands	Indirect evidence	Farnborough, United KingdomHQ checked Sep 21, 2026	501-1,000	177 contacts →
	Indirect evidence “In 2009 SoftBrands was bought by Infor and is now a part of the Infor Hospitality Suite.” Source: RevenueBase Database · checked Sep 21, 2026
4	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
5	Exel Computer Systems PLC	Indirect evidence	Nottingham, United KingdomHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “Exel Computer Systems plc was established in 1985, and today the company is a leading force in the provision of integrated business solutions for manufacturing companies and field…” Source: RevenueBase Database · checked Sep 21, 2026
6	Blueberry Consultants LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	51-200	65 contacts →
	Partial evidence “Blueberry Consultants is a private limited software development company, formed in 1997 by the current Managing Director, Martin Green.” Source: RevenueBase Database · checked Sep 21, 2026
7	Eureka Solutions Scotland LTD	Indirect evidence	East Kilbride, United KingdomHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect evidence “At Eureka Solutions, we specialise in implementing powerful cloud-based systems that have the potential to revolutionise your business.” Source: RevenueBase Database · checked Sep 21, 2026
8	Ghyston	Partial evidence	Bristol, United KingdomHQ checked Sep 21, 2026	51-200	61 contacts →
	Partial evidence “Ghyston is an award-winning UK software company based in Bristol.” Source: RevenueBase Database · checked Sep 21, 2026
9	Balloon ONE	Partial evidence	Brentford, United KingdomHQ checked Sep 21, 2026	51-200	55 contacts →
	Partial evidence “Working with distribution, manufacturing, and e-commerce organisations, Balloon One implements software solutions that fit their businesses perfectly and which help streamline…” Source: RevenueBase Database · checked Sep 21, 2026
10	Sci-Net Business Solutions	Partial evidence	Chipping Norton, United KingdomHQ checked Sep 21, 2026	11-50	53 contacts →
	Partial evidence “At Sci-Net Business Solutions (now part of the ANS Group) we are passionate and driven by the success of our customers.” Source: RevenueBase Database · checked Sep 21, 2026
11	Enapps LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	51 contacts →
	Indirect evidence “Enapps is a modern ERP solution designed for small and medium-sized businesses that need a system as dynamic as they are.” Source: RevenueBase Database · checked Sep 21, 2026
12	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
13	Bluestonex	Partial evidence	Oswestry, United KingdomHQ checked Sep 21, 2026	51-200	48 contacts →
	Partial evidence “At Bluestonex, we are passionate about creating innovative software that transform the way businesses interact with SAP technology.” Source: RevenueBase Database · checked Sep 21, 2026
14	SKO Systems	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	45 contacts →
	Partial evidence “At SKO Systems, we engineer enterprise-grade software ecosystems designed for the unique, high-stakes realities of the maritime environment.” Source: RevenueBase Database · checked Sep 21, 2026
15	Winman ERP Software	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	11-50	43 contacts →
	Partial evidence “WinMan is a powerful ERP Software solutions aimed specifically at the manufacturing, distribution, e-commerce and retail sectors.” Source: RevenueBase Database · checked Sep 21, 2026
16	Pegasus Software	Partial evidence	Kettering, United KingdomHQ checked Sep 21, 2026	51-200	41 contacts →
	Partial evidence “Pegasus Software is one of the UK's leading suppliers of accounting software, cloud accounting software, business solutions and payroll software and has been for over 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
17	Imobisoft	Partial evidence	Coventry, United KingdomHQ checked Sep 21, 2026	11-50	39 contacts →
	Partial evidence “Imobisoft is a full-service bespoke software and automation solutions provider.” Source: RevenueBase Database · checked Sep 21, 2026
18	Crown Interactive Limited	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	39 contacts →
	Partial evidence “Crown Interactive is a technology Software Solution Company with its head office in Lagos, Nigeria.” Source: RevenueBase Database · checked Sep 21, 2026
19	Cedar BAY	Indirect evidence	Andoversford, United KingdomHQ checked Sep 21, 2026	51-200	37 contacts →
	Indirect evidence “Here at Cedar Bay we have years of experience implementing large scale ERP solutions.” Source: RevenueBase Database · checked Sep 21, 2026
20	Equisys	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Equisys produce Zetadocs: AP automation, expense management and document management solutions for Microsoft Dynamics 365 Business Central (with expense management available for…” Source: RevenueBase Database · checked Sep 21, 2026
21	Propel Tech	Indirect evidence	Wakefield, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Indirect evidence “As experts across new and legacy technologies we make possibilities happen to move business forward.” Source: RevenueBase Database · checked Sep 21, 2026
22	Hicom Technology Limited	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Indirect evidence “With 30 years' experience we offer a wide array of solutions and services to meet your business objectives and expectations.” Source: RevenueBase Database · checked Sep 21, 2026
23	Saqaya	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Partial evidence “At SAQAYA, we grow businesses by engineering technology that customers love!” Source: RevenueBase Database · checked Sep 21, 2026
24	Whiz Solutions LTD - UK	Partial evidence	Whitefriars Avenue, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Partial evidence “Whiz Solutions is a dynamic and innovative software development company that specializes in delivering cutting-edge digital solutions to businesses across industries.” Source: RevenueBase Database · checked Sep 21, 2026
25	Convosoft	Partial evidence	Manchester, United KingdomHQ checked Sep 21, 2026	11-50	35 contacts →
	Partial evidence “Our Software Development Company is a leading provider of innovative and reliable software solutions.” 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: custom business 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 custom business software companies.
Partial evidence: Its own public description names part of custom business software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom business 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 968 custom business software companies based in the United Kingdom

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Custom business software companies based in the United Kingdom at a glance

As of Sep 21, 2026

27.6%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

24.9%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

624

11-50

257

51-200

201-500

501-1,000

1,001-5,000

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 968 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 custom business 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 “custom business 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 custom business 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 custom business 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, 2,223 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.

Custom business software companies by metro

Custom business software companies in London241
Custom business software companies in Manchester27

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 custom business 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 custom business software companies are there based in the United Kingdom?

RevenueBase identified 968 custom business 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?

Kerridge Commercial Systems, headquartered in Hungerford, tops this list with the largest team on record.

Which city has the most custom business software companies?

London leads with 241 headquartered companies, followed by Manchester (27) and Leeds (18).

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 2,223 verified decision-maker contacts tracked across these 968 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.