Company lists · Data refreshed September 2026

Top 25 Legacy industrial software modernization companies based in the United Kingdom

Name: Legacy industrial software modernization companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 210 companies tracked

RevenueBase identified 210 legacy industrial software modernization companies headquartered in the United Kingdom as of September 2026 and tracks 2,827 professional contacts across them, including 1,343 with verified work emails. London is the largest hub.

This list covers legacy industrial software modernization companies 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 28, 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 28, 2026 86% judged on-target in blind review

210Companies

2,827Contacts tracked

1,343Verified emails

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The 25 largest legacy industrial software modernization companies based in the United Kingdom

Ranked by team size

Top 25 of 210 legacy industrial software modernization companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to legacy industrial software 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	Forterro	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	385 contacts →
	Strong evidence “Founded in 2012, Forterro has grown to become a category leader software solutions for the industrial market – with strongholds in Europe’s top production economies, as well as…” Source: RevenueBase Database · checked Sep 28, 2026
2	Capula	Indirect evidence	Stone, United KingdomHQ checked Sep 28, 2026	201-500	351 contacts →
	Indirect evidence “What we do \| With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Source: RevenueBase Database · checked Sep 28, 2026
3	ITI Group	Indirect evidence	Sheffield, United KingdomHQ checked Sep 28, 2026	201-500	234 contacts →
	Indirect evidence “For organisations facing the compounding threats of ageing assets, a retiring workforce, and evolving cyber attacks, the status quo is no longer an option.” Source: RevenueBase Database · checked Sep 28, 2026
4	Codurance	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	176 contacts →
	Partial 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 28, 2026
5	Macro 4	Strong evidence	Crawley, United KingdomHQ checked Sep 28, 2026	201-500	134 contacts →
	Strong evidence “Macro 4, a division of UNICOM Global, provides software solutions for customer communications, information management, application decommissioning, mainframe modernization and…” Source: RevenueBase Database · checked Sep 28, 2026
6	Infoteck Solutions	Indirect evidence	Holborn, United KingdomHQ checked Sep 28, 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 28, 2026
7	Denca Controls LTD	Indirect evidence	Widnes, United KingdomHQ checked Sep 28, 2026	51-200	66 contacts →
	Indirect 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 28, 2026
8	Codex Software	Partial evidence	Cirencester, United KingdomHQ checked Sep 28, 2026	51-200	63 contacts →
	Partial evidence “Codex makes software simple, strategic, and reliable.” Source: RevenueBase Database · checked Sep 28, 2026
9	Estafet	Indirect evidence	Richmond, United KingdomHQ checked Sep 28, 2026	51-200	56 contacts →
	Indirect evidence “At Estafet, we don’t just optimize processes - we revolutionize how enterprises operate.” Source: RevenueBase Database · checked Sep 28, 2026
10	Diegesis Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
11	Turintech AI	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	52 contacts →
	Indirect evidence “At TurinTech, we deliver AI-driven solutions that transform the code and data you have into the optimized, production-ready solutions you need.” Source: RevenueBase Database · checked Sep 28, 2026
12	Simkiss Control Systems LTD	Partial evidence	Middleton, United KingdomHQ checked Sep 28, 2026	51-200	47 contacts →
	Partial evidence “Simkiss Control Systems, part of United Infrastructure Group, is a trusted name in the field of industrial automation and control systems.” Source: RevenueBase Database · checked Sep 28, 2026
13	Propel Tech	Partial evidence	Wakefield, United KingdomHQ checked Sep 28, 2026	51-200	36 contacts →
	Partial evidence “As experts across new and legacy technologies we make possibilities happen to move business forward.” Source: RevenueBase Database · checked Sep 28, 2026
14	Servelec Controls	Partial evidence	Sheffield, United KingdomHQ checked Sep 28, 2026	51-200	33 contacts →
	Partial evidence “Servelec Controls develops and integrates bespoke mission-critical systems for national infrastructure by bringing together specialist hardware, software and world-class…” Source: RevenueBase Database · checked Sep 28, 2026
15	Flynet	Indirect evidence	Burwell, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “Since 1995 Flynet have been building some of the industry's most sophisticated web based solutions for Mainframe, Unix, IBM i, VMS, VAX and MultiValue systems.” Source: RevenueBase Database · checked Sep 28, 2026
16	Softelegance	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “Founded in 1993, SoftElegance is a custom software development company that has been providing reliable services for implementation of SaaS systems, sophisticated business…” Source: RevenueBase Database · checked Sep 28, 2026
17	Harford Control LTD	Indirect evidence	Trowbridge, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Harford turns data into actionable information, to drive your continuous improvement.” Source: RevenueBase Database · checked Sep 28, 2026
18	Opensoft Systems LTD	Partial evidence	Knaresborough, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “Opensoft Systems specialises in providing tailored automation systems to industrial market sectors across the globe.” Source: RevenueBase Database · checked Sep 28, 2026
19	Cipher Labz	Indirect evidence	Welwyn Garden City, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Proven success with a multitude of Benefits for Businesses through Modern and Technologically advanced solutions that enhance your entire mechanism in a truly unique way.” Source: RevenueBase Database · checked Sep 28, 2026
20	Transicon Limited	Indirect evidence	Telford, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Design.” Source: RevenueBase Database · checked Sep 28, 2026
21	CETIX	Partial evidence	Rotherham, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Cetix is an independent systems integrator and a proud member of the Ulmatec Group, with over 30 years' experience supplying industrial control systems and services.” Source: RevenueBase Database · checked Sep 28, 2026
22	Incontrol Systems Limited	Indirect evidence	Barlborough, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “InControl Systems have been providing solutions for process control, automation and information systems since From consultation and conception through to design, implementation…” Source: RevenueBase Database · checked Sep 28, 2026
23	Like Technologies	Strong evidence	Halton, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Strong evidence “Like Technologies are specialists in industrial systems, specifically obsolete/legacy control systems and electronics.” Source: RevenueBase Database · checked Sep 28, 2026
24	Jemmac Software LTD	Strong evidence	Cranfield, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Strong evidence “Overview: Jemmac provide software design and development services for a range of industries including Oil & Petrochemicals, Refining, Fleet Telematics, Office Services and…” Source: RevenueBase Database · checked Sep 28, 2026
25	Styletech Solutions Limited	Partial evidence	Hessle, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “At StyleTech, we specialise in bespoke software that’s built around your business.” Source: RevenueBase Database · checked Sep 28, 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: legacy industrial software 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 legacy industrial software modernization companies.
Partial evidence: Its own public description names part of legacy industrial software modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy industrial software 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 210 legacy industrial software modernization companies based in the United Kingdom

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Legacy industrial software modernization companies based in the United Kingdom at a glance

As of Sep 28, 2026

47.5%Verified-email coverage

13.5Average contacts per company

1-10Median size (employees)

20.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

129

11-50

51-200

201-500

1,001-5,000

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 210 companies.

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 legacy industrial software 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 the United Kingdom whose own description of what they do matches “legacy industrial software 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 legacy industrial software 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 legacy industrial software modernization companies, 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, 1,343 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 28, 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.

Legacy industrial software modernization companies by metro

Legacy industrial software modernization companies in London43

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 legacy industrial software 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 legacy industrial software modernization companies are there based in the United Kingdom?

RevenueBase identified 210 legacy industrial software modernization companies 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?

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

Which city has the most legacy industrial software modernization companies?

London leads with 43 headquartered companies, followed by Sheffield (6) and Glasgow (5).

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 1,343 verified decision-maker contacts tracked across these 210 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 28, 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.