Company lists · Data refreshed September 2026

Top 24 Custom software integrators based in the United Kingdom

Name: Custom software integrators based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 1,694 companies tracked

RevenueBase identified 1,694 custom software integrators headquartered in the United Kingdom as of September 2026 and tracks 15,215 professional contacts across them, including 4,319 with verified work emails and 686 with mobile numbers. London is the largest hub.

This list covers custom software integrators 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 29, 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 29, 2026 86% judged on-target in blind review

1,694Companies

15,215Contacts tracked

4,319Verified emails

686Mobile numbers

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The 24 largest custom software integrators based in the United Kingdom

Ranked by team size

Top 24 of 1,694 custom software integrators based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to custom software integrators: 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	Scott Logic	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 29, 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 29, 2026
2	Epi-Use Labs	Partial evidence	Manchester, United KingdomHQ checked Sep 29, 2026	501-1,000	370 contacts →
	Partial evidence “EPI-USE Labs is a global software solutions and managed services company.” Source: RevenueBase Database · checked Sep 29, 2026
3	Kagool	Indirect evidence	Birmingham, United KingdomHQ checked Sep 29, 2026	501-1,000	307 contacts →
	Indirect evidence “Kagool is a global technology consultancy with over 20 years of experience helping enterprise organisations modernise SAP, data and AI platforms.” Source: RevenueBase Database · checked Sep 29, 2026
4	Xperience	Indirect evidence	Lisburn, United KingdomHQ checked Sep 29, 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 29, 2026
5	Eappsys	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	193 contacts →
	Partial evidence “eAppSys is a systems integrator that is focused exclusively on supporting the core enterprise application systems within Oracle On-Premise and Cloud Applications.” Source: RevenueBase Database · checked Sep 29, 2026
6	Softbrands	Indirect evidence	Farnborough, United KingdomHQ checked Sep 29, 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 29, 2026
7	Interex Group	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	160 contacts →
	Indirect evidence “InterEx Group is becoming the strategic partner of choice for organizations undergoing digital, business, and technology transformation.” Source: RevenueBase Database · checked Sep 29, 2026
8	Opinov8	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
9	Intagleo Systems	Indirect evidence	Slough, United KingdomHQ checked Sep 29, 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 29, 2026
10	Synycs Group	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
11	Orchestra	Indirect evidence	Woolwich, United KingdomHQ checked Sep 29, 2026	n/a	129 contacts →
	Indirect evidence “Founded in 2007, we are independent, knowledgeable and reliable.” Source: RevenueBase Database · checked Sep 29, 2026
12	Praesto Consulting	Indirect evidence	Staines-upon-thames, United KingdomHQ checked Sep 29, 2026	201-500	125 contacts →
	Indirect evidence “Technology consultancy providing expertise to complex IT programs.” Source: RevenueBase Database · checked Sep 29, 2026
13	Naimuri	Partial evidence	Salford, United KingdomHQ checked Sep 29, 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 29, 2026
14	Adsyst Automation Limited	Strong evidence	Yateley, United KingdomHQ checked Sep 29, 2026	51-200	93 contacts →
	Strong evidence “As a System Integrator for over 35 years, Adsyst (Automation) Ltd has been providing complex Control Systems for Process Control, Automation and Telemetry to customers worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
15	PDMS	Partial evidence	Braddan, United KingdomHQ checked Sep 29, 2026	51-200	92 contacts →
	Partial evidence “PDMS is a technology company providing software development and digital transformation services.” Source: RevenueBase Database · checked Sep 29, 2026
16	kpi.com	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
17	BIT Wave Solutions Limited	Partial evidence	Reading, United KingdomHQ checked Sep 29, 2026	11-50	75 contacts →
	Partial evidence “Headquartered at Reading, Berkshire in United Kingdom, Bit Wave Solutions enables global businesses to build their future by directing clients’ innovation & customization agenda.” Source: RevenueBase Database · checked Sep 29, 2026
18	Patika Global Technology	Partial evidence	Regents Park, United KingdomHQ checked Sep 29, 2026	51-200	72 contacts →
	Partial evidence “Patika is a technology solutions and consultancy company that is passionate about helping enterprise customers to discover and apply the true value of technology to their business…” Source: RevenueBase Database · checked Sep 29, 2026
19	Infoteck Solutions	Indirect evidence	Holborn, United KingdomHQ checked Sep 29, 2026	51-200	72 contacts →
	Indirect evidence “Infoteck Solutions: Empowering Integration and Automation Welcome to Infoteck Solutions, your trusted partner in seamless integration and efficient automation.” Source: RevenueBase Database · checked Sep 29, 2026
20	Bluesmith Information Systems	Indirect evidence	Leeds, United KingdomHQ checked Sep 29, 2026	51-200	71 contacts →
	Indirect evidence “Bluesmith specialises in bespoke systems for Blue Chip and government clients.” Source: RevenueBase Database · checked Sep 29, 2026
21	Axtrum Technologies	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	68 contacts →
	Indirect evidence “We don’t only deliver a change – We deliver a change that adds value and delivers business benefit that is real, tangible and measurable!” Source: RevenueBase Database · checked Sep 29, 2026
22	Denca Controls LTD	Partial evidence	Widnes, United KingdomHQ checked Sep 29, 2026	51-200	66 contacts →
	Partial evidence “Renowned across numerous sectors as 'the systems integrator of choice', we have built a reputation on delivering high quality, value-for-money solutions that enhance production…” Source: RevenueBase Database · checked Sep 29, 2026
23	Smart IT	Indirect evidence	Kirkham, United KingdomHQ checked Sep 29, 2026	51-200	66 contacts →
	Indirect evidence “We are the UK's largest and most successful Odoo Gold partner.” Source: RevenueBase Database · checked Sep 29, 2026
24	Blueberry Consultants LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 29, 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 29, 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 integrators. 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 integrators.
Partial evidence: Its own public description names part of custom software integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software integrators. 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 1,694 custom software integrators based in the United Kingdom

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Custom software integrators based in the United Kingdom at a glance

As of Sep 29, 2026

28.4%Verified-email coverage

4.5%Mobile-number coverage

9.0Average contacts per company

1-10Median size (employees)

30.8%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,033

11-50

502

51-200

117

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

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

Email last verified

Median 31.0d

1,1840–30

1,44731–60

8661–90

590–180

19180+

Company record updated

Median 95.0d

00–30

74831–60

4,49761–90

5,56290–180

711180+

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 integrators, 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 integrators”. 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 integrators), 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 integrators, 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, 4,319 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 29, 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 integrators by metro

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 integrators, 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 integrators are there based in the United Kingdom?

RevenueBase identified 1,694 custom software integrators 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?

Scott Logic, headquartered in Newcastle Upon Tyne, tops this list with the largest team on record.

Which city has the most custom software integrators?

London leads with 521 headquartered companies, followed by Manchester (49) and Birmingham (29).

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 4,319 verified decision-maker contacts tracked across these 1,694 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 29, 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.