Company lists · Data refreshed September 2026

Top 25 Enterprise application modernization firms based in the United Kingdom

Name: Enterprise application modernization firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 357 companies tracked

RevenueBase identified 357 enterprise application modernization firms headquartered in the United Kingdom as of September 2026 and tracks 102,115 professional contacts across them, including 25,248 with verified work emails and 8,361 with mobile numbers. London is the largest hub.

This list covers enterprise application modernization firms 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

357Companies

102,115Contacts tracked

25,248Verified emails

8,361Mobile numbers

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The 25 largest enterprise application modernization firms based in the United Kingdom

Ranked by team size

Top 25 of 357 enterprise application modernization firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise application modernization firms: 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	Mphasis	Indirect evidence	London, United Kingdom	10001+	43,740 contacts →
	Indirect evidence “At Mphasis, engineering has been in our DNA since inception.” Source: RevenueBase Database · checked Sep 2, 2026
2	Persistent Systems	Strong evidence	Chertsey, United Kingdom	10001+	27,186 contacts →
	Strong evidence “We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients…” Source: RevenueBase Database · checked Sep 2, 2026
3	IGT Solutions	Indirect evidence	London, United Kingdom	10001+	14,674 contacts →
	Indirect evidence “IGT Solutions is now Atain.” Source: RevenueBase Database · checked Sep 2, 2026
4	Andersen LAB	Indirect evidence	London, United Kingdom	1,001-5,000	3,609 contacts →
	Indirect evidence “Andersen – your global software development partner Andersen is a global software development company with over 18 years of experience supporting businesses worldwide in their…” Source: RevenueBase Database · checked Sep 2, 2026
5	Ensono	Indirect evidence	Staines-Upon-Thames, United Kingdom	1,001-5,000	3,246 contacts →
	Indirect evidence “Ensono is an expert technology adviser and managed service provider.” Source: RevenueBase Database · checked Sep 2, 2026
6	BBD	Indirect evidence	London, United Kingdom	1,001-5,000	1,220 contacts →
	Indirect evidence “Welcome to BBD – where experience, innovation and software engineering excellence come together.” Source: RevenueBase Database · checked Sep 2, 2026
7	Indus NET Technologies INT	Partial evidence	London, United Kingdom	501-1,000	1,065 contacts →
	Partial evidence “For nearly three decades, Indus Net Technologies (INT.) has empowered global enterprises to build intelligent, secure, and scalable digital ecosystems -> transforming complexity…” Source: RevenueBase Database · checked Sep 2, 2026
8	Sourcefuse	Partial evidence	London, United Kingdom	501-1,000	669 contacts →
	Partial evidence “SourceFuse is a global, AI-native digital and product engineering company that helps enterprises build, modernize, and scale intelligent systems.” Source: RevenueBase Database · checked Sep 2, 2026
9	Ahana Systems And Solutions Pvt. LTD	Indirect evidence	London, United Kingdom	501-1,000	645 contacts →
	Indirect evidence “Fifteen years ago, Ahana began with a simple belief: technology should enable growth, not create complexity.” Source: RevenueBase Database · checked Sep 2, 2026
10	Node4	Indirect evidence	London, United Kingdom	1,001-5,000	624 contacts →
	Indirect evidence “Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.” Source: RevenueBase Database · checked Sep 2, 2026
11	Acuvate	Partial evidence	London, United Kingdom	201-500	541 contacts →
	Partial evidence “At Acuvate, we empower enterprises to accelerate their Next gen transformation journeys with an AI-First approach.” Source: RevenueBase Database · checked Sep 2, 2026
12	Excelencia	Indirect evidence	London, United Kingdom	201-500	377 contacts →
	Indirect evidence “Excelencia is a US-based, ISO 27001:2022-certified technology services company, specializing in Oracle solutions and Digital Engineering.” Source: RevenueBase Database · checked Sep 2, 2026
13	Biztech Consulting & Solutions	Indirect evidence	Ruislip Ruislip, United Kingdom	201-500	317 contacts →
	Indirect evidence “With over 19+ years of experience and 1200+ successful projects, BiztechCS is an ISO 27001 and ISO 9001 certified company.” Source: RevenueBase Database · checked Sep 2, 2026
14	Cintra The Multi-Cloud Database Architects	Partial evidence	Glasgow, United Kingdom	51-200	184 contacts →
	Partial evidence “Cintra: Your multi-cloud infrastructure and database modernization and managed services partner.” Source: RevenueBase Database · checked Sep 2, 2026
15	Qbrainx INC	Indirect evidence	London, United Kingdom	201-500	181 contacts →
	Indirect evidence “At the core of QBrainX's foundation is a mission to empower and fortify organizations across diverse domains, guiding them to achieve excellence in their respective fields.” Source: RevenueBase Database · checked Sep 2, 2026
16	Codurance	Indirect evidence	London, United Kingdom	201-500	171 contacts →
	Indirect evidence “For over 13 years, Codurance has helped businesses and their boards solve complex software challenges, often the ones that have resisted previous attempts and now carry real…” Source: RevenueBase Database · checked Sep 2, 2026
17	Intagleo Systems	Indirect evidence	Slough, United Kingdom	51-200	136 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 2, 2026
18	Redfaire	Indirect evidence	Reading, United Kingdom	51-200	118 contacts →
	Indirect evidence “At Redfaire, we help organisations get the very best out of their Oracle ERP systems.” Source: RevenueBase Database · checked Sep 2, 2026
19	Mechanical Orchard	Indirect evidence	United Kingdom	51-200	115 contacts →
	Indirect evidence “Mechanical Orchard is an AI-native technology company that de-risks the process of bringing old but critical computer systems up to date.” Source: RevenueBase Database · checked Sep 2, 2026
20	Wohlig	Indirect evidence	London, United Kingdom	51-200	99 contacts →
	Indirect evidence “Wohlig is the catalyst that transforms the clients perspective of technology and empowers them to take advantage of the digital revolution that is constantly evolving.” Source: RevenueBase Database · checked Sep 2, 2026
21	Merixstudio	Partial evidence	Bristol, United Kingdom	51-200	84 contacts →
	Partial evidence “Global #1 Software Company on Clutch We design, build and modernize digital products, platforms and connected systems for mid-size and enterprise businesses - with AI-augmented…” Source: RevenueBase Database · checked Sep 2, 2026
22	Retter	Indirect evidence	London, United Kingdom	51-200	80 contacts →
	Indirect evidence “The Digital Transformation Powerhouse Behind Industry Leaders” Source: RevenueBase Database · checked Sep 2, 2026
23	Linksoft Technologies	Indirect evidence	Islington, United Kingdom	51-200	70 contacts →
	Indirect evidence “Linksoft builds AI-driven systems and helps companies adapt their technology infrastructure for the way modern businesses now operate.” Source: RevenueBase Database · checked Sep 2, 2026
24	Indglobal Digital Private Limited	Partial evidence	Uk, United Kingdom	51-200	69 contacts →
	Partial evidence “Overview- The expertise of an Enterprise, Now available for everyone.” Source: RevenueBase Database · checked Sep 2, 2026
25	Practicevantage Consulting	Indirect evidence	London, United Kingdom	51-200	64 contacts →
	Indirect evidence “At PracticeVantage, we help organizations simplify complexity and unlock efficiency through smart, scalable digital solutions.” Source: RevenueBase Database · checked Sep 2, 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: enterprise application modernization firms. 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 enterprise application modernization firms.
Partial evidence: Its own public description names part of enterprise application modernization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise application modernization firms. 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 357 enterprise application modernization firms based in the United Kingdom

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Enterprise application modernization firms based in the United Kingdom at a glance

As of Sep 2, 2026

24.7%Verified-email coverage

8.2%Mobile-number coverage

286.0Average contacts per company

11-50Median size (employees)

43.1%Largest-city concentration · London

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

171

11-50

122

51-200

201-500

501-1,000

1,001-5,000

10001+

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 enterprise application modernization firms, 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 “enterprise application modernization firms”. 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 enterprise application modernization firms), 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 enterprise application modernization firms, 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, 25,248 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 2, 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.

Enterprise application modernization firms by metro

Enterprise application modernization firms in London154

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 enterprise application modernization firms, 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 enterprise application modernization firms are there based in the United Kingdom?

RevenueBase identified 357 enterprise application modernization firms 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?

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

Which city has the most enterprise application modernization firms?

London leads with 154 headquartered companies, followed by Manchester (14) and Birmingham (10).

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 25,248 verified decision-maker contacts tracked across these 357 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 2, 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.