Company lists · Data refreshed September 2026

Top 25 Application modernization services based in London, United Kingdom

Name: Application modernization services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 79 companies tracked

RevenueBase identified 79 application modernization services headquartered in London, United Kingdom as of September 2026 and tracks 2,150 professional contacts across them, including 719 with verified work emails and 101 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers application modernization services headquartered in London, 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 27, 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 27, 2026 86% judged on-target in blind review

79Companies

2,150Contacts tracked

719Verified emails

101Mobile numbers

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The 25 largest application modernization services based in London, United Kingdom

Ranked by team size

Top 25 of 79 application modernization services based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to application modernization services: 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	Acuvate	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	545 contacts →
	Indirect evidence “At Acuvate, we empower enterprises to accelerate their Next gen transformation journeys with an AI-First approach.” Source: RevenueBase Database · checked Sep 27, 2026
2	Hitachi Solutions UK	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	422 contacts →
	Indirect evidence “Our team of world-class professionals across the globe work together to innovate and enable sustainable business transformation.” Source: RevenueBase Database · checked Sep 27, 2026
3	Codurance	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	176 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 27, 2026
4	Daemon	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	145 contacts →
	Indirect evidence “Founded in 2007, Daemon is a technology consultancy with a mission to make the world a better place by creating movements that power digital transformation.” Source: RevenueBase Database · checked Sep 27, 2026
5	Infosight Consulting	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	121 contacts →
	Indirect evidence “At Infosight, we architect the future of enterprises by engineering your digital core and activating the intelligence within.” Source: RevenueBase Database · checked Sep 27, 2026
6	Craftsmen	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	85 contacts →
	Indirect evidence “Craftsmen helps companies modernize products, engineering workflows, and digital operations for the AI era.” Source: RevenueBase Database · checked Sep 27, 2026
7	KLOIA	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	75 contacts →
	Strong evidence “Kloia is an AWS Premier Tier Services Partner that specializes in DevOps/Cloud, Application Modernization, Software Testing and Generative AI.” Source: RevenueBase Database · checked Sep 27, 2026
8	Cloudplexo	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	54 contacts →
	Indirect evidence “CloudPlexo is a global technology consulting firm helping organizations transform, innovate, and build resilience through Cloud, AI, and Cybersecurity.” Source: RevenueBase Database · checked Sep 27, 2026
9	Diegesis Limited	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	52 contacts →
	Indirect evidence “Diegesis is a business technology and IT systems integration company that specialises in Decision Support Solutions.” Source: RevenueBase Database · checked Sep 27, 2026
10	Sapphire	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	44 contacts →
	Indirect evidence “Sapphire is the largest digital operating transformation provider to the mid-market and mid-enterprise clients.” Source: RevenueBase Database · checked Sep 27, 2026
11	Camwood	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	31 contacts →
	Indirect evidence “Camwood: Igniting Enterprise Innovation for 25 Years.” Source: RevenueBase Database · checked Sep 27, 2026
12	The RAD Consulting Group	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	27 contacts →
	Indirect evidence “RAD is a technology consultancy specialising in digital platform modernisation for property, retail and financial services organisations.” Source: RevenueBase Database · checked Sep 27, 2026
13	Goaltech	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “Goaltech \| Cloud.” Source: RevenueBase Database · checked Sep 27, 2026
14	Bridgeapps LTD	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “We are tech savvy bunch of people who love to work with Cloud, Infra and Code to create meaningful solutions which solves real business problems.” Source: RevenueBase Database · checked Sep 27, 2026
15	Tammwe Buildateam AI	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	12 contacts →
	Indirect evidence “Tammwe helps organisations unlock faster, smarter, and more cost-effective digital transformation.” Source: RevenueBase Database · checked Sep 27, 2026
16	Sorint.Lab UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	7 contacts →
	Indirect evidence “We are an IT service company focused on Digital Transformation and System Integration solutions, providing services, consultancy and training.” Source: RevenueBase Database · checked Sep 27, 2026
17	Application Readiness	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	6 contacts →
	Partial evidence “Readiness is the world’s first entirely web-based, dynamic, on-demand system for automatic application assessment, remediation and conversion of an enterprise’s entire portfolio…” Source: RevenueBase Database · checked Sep 27, 2026
18	Devroom	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	6 contacts →
	Indirect evidence “At DevRoom we deliver high-quality software solutions tailored to your business.” Source: RevenueBase Database · checked Sep 27, 2026
19	Sysdojo	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	6 contacts →
	Partial evidence “As a fast-growing technology services company, we specialise in developing, maintaining modern applications, as well as building, operating and maintaining your cloud…” Source: RevenueBase Database · checked Sep 27, 2026
20	Roll Studio	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	6 contacts →
	Indirect evidence “We transform legacy software into beautifully-crafted, market-leading solutions.” Source: RevenueBase Database · checked Sep 27, 2026
21	Avallo	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	5 contacts →
	Indirect evidence “Avallo partners with private equity firms and portfolio companies to solve complex technology and operational problems.” Source: RevenueBase Database · checked Sep 27, 2026
22	Emiq Tech Private Limited	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	4 contacts →
	Indirect evidence “EMIQ TECH: Empowering the Future of Technology EMIQ TECH is a dynamic and innovative software company at the forefront of technological advancement.” Source: RevenueBase Database · checked Sep 27, 2026
23	BQ Solutions	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “At BQ Solutions, we excel in leveraging the Microsoft technology stack to offer innovative solutions.” Source: RevenueBase Database · checked Sep 27, 2026
24	packman.io	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Indirect evidence “Got some C code written 20 years ago to run on AIX?” Source: RevenueBase Database · checked Sep 27, 2026
25	WR Logic	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Indirect evidence “Digital transformation is no longer a choice – it’s essential WR Logic recognises this reality and builds digital services putting users needs and automation at the core of your…” Source: RevenueBase Database · checked Sep 27, 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: application modernization services. 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 application modernization services.
Partial evidence: Its own public description names part of application modernization services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name application modernization services. 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 79 application modernization services based in London, United Kingdom

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Application modernization services based in London, United Kingdom at a glance

As of Sep 27, 2026

33.4%Verified-email coverage

4.7%Mobile-number coverage

27.2Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Freshness & accuracy

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

Email last verified

Median 29.0d

4100–30

29231–60

1361–90

090–180

4180+

Company record updated

Median 79.0d

00–30

20631–60

98561–90

79690–180

163180+

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 application modernization services, 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 London, United Kingdom whose own description of what they do matches “application modernization services”. 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 application modernization services), 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 application modernization services, and records with no verified work email. Companies headquartered outside London 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, 719 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 27, 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.

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 application modernization services, 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 application modernization services are there based in London, United Kingdom?

RevenueBase identified 79 application modernization services headquartered in London, 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?

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

Which city in the United Kingdom has the most application modernization services?

London leads the United Kingdom with 79 headquartered companies, followed by Birmingham (6) and Manchester (6).

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 719 verified decision-maker contacts tracked across these 79 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 27, 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.