Company lists · Data refreshed September 2026

Top 25 App modernization companies based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 128 companies tracked

RevenueBase identified 128 app modernization companies headquartered in London, United Kingdom as of September 2026 and tracks 1,885 professional contacts across them, including 536 with verified work emails and 85 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers app modernization companies 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 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

128Companies

1,885Contacts tracked

536Verified emails

85Mobile numbers

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The 25 largest app modernization companies based in London, United Kingdom

Ranked by team size

Top 25 of 128 app modernization companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to app modernization 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	Dreams Technologies, UK & India	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	221 contacts →
	Indirect evidence “At Dreams Technologies, we’re more than software engineers, we’re digital transformation partners.” Source: RevenueBase Database · checked Sep 24, 2026
2	Codurance	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
3	Daemon	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
4	Infosight Consulting	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
5	KLOIA	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	75 contacts →
	Partial 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 24, 2026
6	unipro.io	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	71 contacts →
	Indirect evidence “Unipro is a bespoke software studio that creates custom solutions to solve the most complex digital transformation challenges, giving our clients unparalleled control and lasting…” Source: RevenueBase Database · checked Sep 24, 2026
7	Cloudplexo	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
8	Diegesis Limited	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
9	Pace Integration	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	47 contacts →
	Indirect evidence “Pace Integration is a unique technology consultancy that solves your integration challenge – focused on enterprise systems integration strategy, architecture and design that is…” Source: RevenueBase Database · checked Sep 24, 2026
10	Sapphire	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
11	Camwood	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	31 contacts →
	Indirect evidence “Camwood: Igniting Enterprise Innovation for 25 Years.” Source: RevenueBase Database · checked Sep 24, 2026
12	Steer73	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	30 contacts →
	Indirect evidence “A full-service digital transformation agency that handles a range of complex, business-critical projects for both enterprise and SME clients.” Source: RevenueBase Database · checked Sep 24, 2026
13	The RAD Consulting Group	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
14	Swayam Group	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	25 contacts →
	Indirect evidence “We are an entrepreneurial innovation focused technology firm.” Source: RevenueBase Database · checked Sep 24, 2026
15	Coremaker	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	24 contacts →
	Indirect evidence “We are a software engineering studio, that helps large companies tackle innovation head-on.” Source: RevenueBase Database · checked Sep 24, 2026
16	Hucclecote	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	19 contacts →
	Indirect evidence “We are team of innovative technical consultants and seasoned developers with in-depth technical knowledge of some of the most complex solutions.” Source: RevenueBase Database · checked Sep 24, 2026
17	Wemixt	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	17 contacts →
	Indirect evidence “WEMIXT is a forward-thinking technology company dedicated to engineering digital transformations that scale your business from the ground up.” Source: RevenueBase Database · checked Sep 24, 2026
18	Goaltech	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	16 contacts →
	Indirect evidence “Goaltech \| Cloud.” Source: RevenueBase Database · checked Sep 24, 2026
19	Bridgeapps LTD	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
20	Scalesops	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	15 contacts →
	Indirect evidence “ScalesOps is an agile digital transformation partner that delivers tailor-made solutions for companies in e-commerce, healthcare, social, and other industries.” Source: RevenueBase Database · checked Sep 24, 2026
21	Digitalworks	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	13 contacts →
	Indirect evidence “Digital Works is a digital and software development company.” Source: RevenueBase Database · checked Sep 24, 2026
22	Tammwe Buildateam AI	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	12 contacts →
	Indirect evidence “Tammwe helps organisations unlock faster, smarter, and more cost-effective digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
23	STAKK	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	11 contacts →
	Partial evidence “Stakk is the UK's #1 mobile app development company based in London with over 10 years of experience building custom iOS apps, Android apps, and cross-platform mobile applications…” Source: RevenueBase Database · checked Sep 24, 2026
24	Imaginetec	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	7 contacts →
	Indirect evidence “We are a team of experienced consultants with a strong background in business and IT and we can guide your enterprise on it’s journey to digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
25	Fortnight Studio	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	7 contacts →
	Partial evidence “We turn ideas and ambition into mobile apps with millions of happy users.” 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: app modernization 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 app modernization companies.
Partial evidence: Its own public description names part of app modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name app modernization 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 128 app modernization companies based in London, United Kingdom

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App modernization companies based in London, United Kingdom at a glance

As of Sep 24, 2026

28.4%Verified-email coverage

4.5%Mobile-number coverage

14.7Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

10001+

Freshness & accuracy

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

Email last verified

Median 26.0d

3950–30

13031–60

561–90

090–180

6180+

Company record updated

Median 76.0d

00–30

25331–60

85661–90

65190–180

125180+

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 app modernization 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 London, United Kingdom whose own description of what they do matches “app modernization 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 app modernization 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 app modernization companies, 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, 536 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.

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 app modernization 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 app modernization companies are there based in London, United Kingdom?

RevenueBase identified 128 app modernization companies 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?

Dreams Technologies, UK & India, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most app modernization companies?

London leads the United Kingdom with 110 headquartered companies, followed by Glasgow (8) and Manchester (7).

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 536 verified decision-maker contacts tracked across these 128 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.