Company lists · Data refreshed September 2026

Top 24 Custom software companies based in the United Kingdom

Name: Custom 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 24, 2026 3,092 companies tracked

RevenueBase identified 3,092 custom software companies headquartered in the United Kingdom as of September 2026 and tracks 37,027 professional contacts across them, including 11,545 with verified work emails and 1,614 with mobile numbers. London is the largest hub.

This list covers custom 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 24, 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 24, 2026 86% judged on-target in blind review

3,092Companies

37,027Contacts tracked

11,545Verified emails

1,614Mobile numbers

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The 24 largest custom software companies based in the United Kingdom

Ranked by team size

Top 24 of 3,092 custom software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom 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	Endava	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	10001+	9,653 contacts →
	Indirect evidence “For over two decades, we have been harnessing technology to drive meaningful change.” Source: RevenueBase Database · checked Sep 24, 2026
2	Dotsquares	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	1,581 contacts →
	Indirect evidence “We leverage the latest web and mobile technologies to build, grow and support your business.” Source: RevenueBase Database · checked Sep 24, 2026
3	Amdaris	Partial evidence	Bristol, United KingdomHQ checked Sep 24, 2026	501-1,000	988 contacts →
	Partial evidence “Amdaris, an Insight Company delivers innovative Software Development, Product Design, Digital Transformation, Application Support and Consultancy Services from our UK headquarters…” Source: RevenueBase Database · checked Sep 24, 2026
4	SENLA	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	515 contacts →
	Partial evidence “In 2012, SENLA set out with a vision: to transform people's lives with exceptional software.” Source: RevenueBase Database · checked Sep 24, 2026
5	Scott Logic	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 24, 2026	201-500	383 contacts →
	Partial evidence “At Scott Logic, we design and build software that transforms the performance of some of the world’s biggest and most demanding organisations.” Source: RevenueBase Database · checked Sep 24, 2026
6	Damco Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	327 contacts →
	Partial evidence “Damco Solutions Limited is a specialist software solutions and services & a business process outsourcing services company.” Source: RevenueBase Database · checked Sep 24, 2026
7	Dreams Technologies, UK & India	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	221 contacts →
	Partial evidence “At Dreams Technologies, we’re more than software engineers, we’re digital transformation partners.” Source: RevenueBase Database · checked Sep 24, 2026
8	KRIFY	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	221 contacts →
	Partial evidence “Krify is a results-driven technology company specializing in crafting user-centric mobile apps, web applications, and software solutions.” Source: RevenueBase Database · checked Sep 24, 2026
9	Leighton	Strong evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 24, 2026	51-200	201 contacts →
	Strong evidence “Leighton is a software development business that builds high performing teams and develops successful software applications for its customers.” Source: RevenueBase Database · checked Sep 24, 2026
10	ONE Beyond	Partial evidence	Farnborough, United KingdomHQ checked Sep 24, 2026	201-500	185 contacts →
	Partial evidence “We build software solutions, partnering with ambitious clients looking to grow by harnessing next-generation technology.” Source: RevenueBase Database · checked Sep 24, 2026
11	scrums.com	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	163 contacts →
	Partial evidence “Scrums.com is the Software Engineering Orchestration Platform (SEOP).” Source: RevenueBase Database · checked Sep 24, 2026
12	Digis, A Fiverr Company Nyse Fvrr	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	163 contacts →
	Partial evidence “Digis is a leading software development company with a team of over.” Source: RevenueBase Database · checked Sep 24, 2026
13	Opinov8	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	154 contacts →
	Indirect evidence “Winner of the Best AI Company Award by The Netty Awards · Headquartered in London, powered by a worldwide team of engineers across Europe, Egypt, and the Americas.” Source: RevenueBase Database · checked Sep 24, 2026
14	IIH Global	Indirect evidence	Rickmansworth, United KingdomHQ checked Sep 24, 2026	51-200	149 contacts →
	Indirect evidence “IIH Global is a global technology solutions company helping startups, SMEs, and enterprises in the UK, US, Europe, Australia, and Canada build the digital tools they need to run…” Source: RevenueBase Database · checked Sep 24, 2026
15	Digitally Inspired, Part Of Intellias	Partial evidence	Guildford, United KingdomHQ checked Sep 24, 2026	201-500	145 contacts →
	Partial evidence “Digitally Inspired(DI) Ltd is a fast-growing technology and software engineering Consultancy for business.” Source: RevenueBase Database · checked Sep 24, 2026
16	Intagleo Systems	Indirect evidence	Slough, United KingdomHQ checked Sep 24, 2026	51-200	138 contacts →
	Indirect evidence “For over 22 years, Intagleo has been a trusted partner for businesses worldwide and US Primes, empowering them to achieve their digital transformation goals through innovative…” Source: RevenueBase Database · checked Sep 24, 2026
17	Synycs Group	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	132 contacts →
	Partial evidence “Incorporated in 2014 and headquartered in the UK, Synycs Group is a CMMI Level 4 industry-leading & most reliable software and mobile app development company known for delivering…” Source: RevenueBase Database · checked Sep 24, 2026
18	Naimuri	Partial evidence	Salford, United KingdomHQ checked Sep 24, 2026	51-200	118 contacts →
	Partial evidence “We are Naimuri, a software development house, based in Manchester, specialising in data intelligence solutions.” Source: RevenueBase Database · checked Sep 24, 2026
19	PDMS	Partial evidence	Braddan, United KingdomHQ checked Sep 24, 2026	51-200	92 contacts →
	Partial evidence “PDMS is a technology company providing software development and digital transformation services.” Source: RevenueBase Database · checked Sep 24, 2026
20	BN Digital	Strong evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	87 contacts →
	Strong evidence “BN Digital is an enterprise software development agency specialising in custom web platform development, mobile app development, and AI/ML implementation We care deeply about…” Source: RevenueBase Database · checked Sep 24, 2026
21	Conovo Technologies	Strong evidence	Slough, United KingdomHQ checked Sep 24, 2026	51-200	84 contacts →
	Strong evidence “Conovo Technologies builds AI automation, agents and custom software for startups and SMEs.” Source: RevenueBase Database · checked Sep 24, 2026
22	Webevis Technologies	Partial evidence	Bradford, United KingdomHQ checked Sep 24, 2026	51-200	83 contacts →
	Partial evidence “Webevis is a software development company specializing in delivering incomparable web and mobile application development services to diverse clients across the globe.” Source: RevenueBase Database · checked Sep 24, 2026
23	Think Digitally	Partial evidence	Greenwich Peninsula, United KingdomHQ checked Sep 24, 2026	51-200	80 contacts →
	Partial evidence “At Think Digitally, we’re all about connecting people, technology, and our planet to create software that’s a joy to use.” Source: RevenueBase Database · checked Sep 24, 2026
24	Clurgo	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	76 contacts →
	Partial evidence “Clurgo empowers global enterprises and early ventures to deliver software at higher velocity and better quality.” Source: RevenueBase Database · checked Sep 24, 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 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 software companies.
Partial evidence: Its own public description names part of custom 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 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 24 of 3,092 custom software companies based in the United Kingdom

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Custom software companies based in the United Kingdom at a glance

As of Sep 24, 2026

31.2%Verified-email coverage

4.4%Mobile-number coverage

12.0Average contacts per company

1-10Median size (employees)

36.2%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

1,884

11-50

930

51-200

204

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

8,5720–30

2,75931–60

13661–90

990–180

69180+

Company record updated

Median 80.0d

00–30

5,06531–60

17,23761–90

12,55590–180

2,170180+

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 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 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 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 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, 11,545 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 24, 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 software companies by metro

Custom software companies in London1120
Custom software companies in Manchester97
Custom software companies in Birmingham67
Custom software companies in Bristol42
Custom software companies in Leeds41
Custom software companies in Glasgow39
Custom software companies in Edinburgh28
Custom software companies in Belfast27
Custom software companies in Milton Keynes25

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 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 software companies are there based in the United Kingdom?

RevenueBase identified 3,092 custom 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?

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

Which city has the most custom software companies?

London leads with 1120 headquartered companies, followed by Manchester (97) and Birmingham (67).

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 11,545 verified decision-maker contacts tracked across these 3,092 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 24, 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.