Company lists · Data refreshed September 2026

Top 24 Application modernization companies based in the United Kingdom

RevenueBase identified 148 company matches for application modernization companies associated with the United Kingdom as of September 2026 and tracks 3,548 professional contacts across them, including 1,083 with verified work emails. London is the largest hub.

This list covers company matches for application modernization companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
148Companies
3,548Contacts tracked
1,083Verified emails
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The 24 largest application modernization companies based in the United Kingdom

Ranked by team size
Top 24 of 148 company matches for application modernization companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDerby, United KingdomHQ recorded Sep 19, 20261,001-5,000628 contacts →

Exact match

“Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500242 contacts →

Exact match

“At Parser we help organisations deliver impact through technology.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500176 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500121 contacts →

Exact match

“At Infosight, we architect the future of enterprises by engineering your digital core and activating the intelligence within.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchMaidenhead, United KingdomHQ recorded Sep 19, 202651-20097 contacts →

Exact match

“NeosAlpha: Your Trusted Partner in IT Consulting and Digital Transformation Founded in the UK in 2017, NeosAlpha is a niche IT consulting and services company, that delivers…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20075 contacts →

Exact match

“Kloia is an AWS Premier Tier Services Partner that specializes in DevOps/Cloud, Application Modernization, Software Testing and Generative AI.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchCirencester, United KingdomHQ recorded Sep 19, 202651-20063 contacts →

Exact match

“Codex makes software simple, strategic, and reliable.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20052 contacts →

Exact match

“Diegesis is a business technology and IT systems integration company that specialises in Decision Support Solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchDaresbury, United KingdomHQ recorded Sep 19, 2026201-50050 contacts →

Exact match

“Eclature Technologies stands for engineering innovation, excellence, and reliability.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchWakefield, United KingdomHQ recorded Sep 19, 202651-20036 contacts →

Exact match

“As experts across new and legacy technologies we make possibilities happen to move business forward.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20031 contacts →

Exact match

“Camwood: Igniting Enterprise Innovation for 25 Years.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchBristol, United KingdomHQ recorded Sep 19, 202611-5021 contacts →

Exact match

“We help clients deliver digital transformation projects that create better digital experiences.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchHessle, United KingdomHQ recorded Sep 19, 202611-5019 contacts →

Exact match

“At StyleTech, we specialise in bespoke software that’s built around your business.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchWatford, United KingdomHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“At Appdrawn we want the computers to do the work for you, so you can do the things computers cannot: meet with your clients, engage with your team or dream about your next step!”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5012 contacts →

Exact match

“Tammwe helps organisations unlock faster, smarter, and more cost-effective digital transformation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchNewquay, United KingdomHQ recorded Sep 19, 202611-5011 contacts →

Exact match

“Flowmoco: Transforming Technical Challenges into Solutions At Flowmoco, we deliver seamless technical solutions to help businesses thrive.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchReading, United KingdomHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“MigrationWare is a solutions company dedicated to the preservation and protection of the life expectancy of business applications threatened by obsolete technology, as well as by…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchLeeds, United KingdomHQ recorded Sep 19, 20261-1010 contacts →

Exact match

“DRS is a specialist software development and consulting firm focused on high performance web applications, data analytics and application modernisation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchBelfast, United KingdomHQ recorded Sep 19, 202611-509 contacts →

Exact match

“We help businesses modernize, innovate, and scale with custom software development, IoT solutions, and digital transformation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchSaltaire, United KingdomHQ recorded Sep 19, 202611-508 contacts →

Exact match

“True9 is a technology consultancy grounded in real-world delivery.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-506 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchStockport, United KingdomHQ recorded Sep 19, 202611-506 contacts →

Exact match

“Legacy Box is a Microsoft co-sell approved ("Preferred Solution") vendor created by a group of skilled and accredited software developers working in the Windows application space.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchThames Valley Park, United KingdomHQ recorded Sep 19, 202611-506 contacts →

Exact match

“Enterprise transformation is at the heart of what we do.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-506 contacts →

Exact match

“After only two years we are already trusted by nearly a dozen of the world’s leading enterprises.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 24 of 148 application modernization companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,083 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Application modernization companies based in the United Kingdom at a glance

As of Sep 19, 2026
30.5%Verified-email coverage
24.0Average contacts per company
1-10Median size (employees)
38.5%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
79
11-50
45
51-200
13
201-500
6
501-1,000
2
1,001-5,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 148 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “application modernization companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,083 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Application modernization companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “application modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many application modernization companies are there based in the United Kingdom?

RevenueBase identified 148 company matches for application modernization companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Node4 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most application modernization companies?

London leads with 57 company records, followed by Manchester (5) and Belfast (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,083 professional contacts with verified work emails tracked across these 148 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 SmartSearch, 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.