Company lists · Data refreshed November 2026

Top 18 Legacy system integration consultants based in the United Kingdom

Name: Legacy system integration consultants based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 490 companies tracked

RevenueBase identified 490 company matches for legacy system integration consultants associated with the United Kingdom as of November 2026 and tracks 8,276 professional contacts across them, including 2,337 with verified work emails. London is the largest hub.

This list covers company matches for legacy system integration consultants 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 November 6, 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 Nov 6, 2026 How this list was built

490Companies

8,276Contacts tracked

2,337Verified emails

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The 18 largest legacy system integration consultants based in the United Kingdom

Ranked by team size

Top 18 of 490 company matches for legacy system integration consultants based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	PMC	Exact match	Abingdon, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,503 contacts →
	Exact match “PMC combines consulting with expert software engineering and 24x7x365 managed services to deliver high-quality technology services and solutions across retail, D2C, and broader…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Codestone Group	Exact match	Poole, United KingdomHQ recorded Nov 6, 2026	201-500	212 contacts →
	Exact match “WINNERS!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Techneplus	Exact match	United States, United KingdomHQ recorded Nov 6, 2026	501-1,000	157 contacts →
	Exact match “At TechnePlus, we believe technology is most powerful when it brings people together and solves real-world challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Neosalpha Technologies	Exact match	Maidenhead, United KingdomHQ recorded Nov 6, 2026	51-200	110 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 · Nov 6, 2026 · View company records in RevenueBase
5	Adapt A Datapipe Company	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	105 contacts →
	Exact match “Adapt is a leading UK managed cloud services provider and integrator, enabling customers’ digital evolution.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	BIT Wave Solutions Limited	Exact match	Reading, United KingdomHQ recorded Nov 6, 2026	11-50	84 contacts →
	Exact match “Headquartered at Reading, Berkshire in United Kingdom, Bit Wave Solutions enables global businesses to build their future by directing clients’ innovation & customization agenda.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Bluesmith Information Systems	Exact match	Leeds, United KingdomHQ recorded Nov 6, 2026	51-200	80 contacts →
	Exact match “Bluesmith specialises in bespoke systems for Blue Chip and government clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Integrella	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	76 contacts →
	Exact match “Integrella is a specialist IT services company with extensive experience across UK sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Infoteck Solutions	Exact match	Holborn, United KingdomHQ recorded Nov 6, 2026	51-200	68 contacts →
	Exact match “Infoteck Solutions: Empowering Integration and Automation Welcome to Infoteck Solutions, your trusted partner in seamless integration and efficient automation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Aptitude Global	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	64 contacts →
	Exact match “Aptitude pairs specialists practitioners with proprietary software-delivering data, AI, and operational transformation at speed, with greater returns and enduring performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	KTSL	Exact match	Corsham, United KingdomHQ recorded Nov 6, 2026	11-50	57 contacts →
	Exact match “We’ve been in the service management and integration space for over 25 years and as a BMC Elite Partner, our consultants and technical staff are BMC & ITIL accredited.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Advisority	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	57 contacts →
	Exact match “We are the trusted IT integrator that specialises in making your work flow.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Estafet	Exact match	Richmond, United KingdomHQ recorded Nov 6, 2026	51-200	54 contacts →
	Exact match “At Estafet, we don’t just optimize processes - we revolutionize how enterprises operate.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Diegesis Limited	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	53 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 · Nov 6, 2026 · View company records in RevenueBase
15	Kinetic IT LTD	Exact match	Erith, United KingdomHQ recorded Nov 6, 2026	11-50	52 contacts →
	Exact match “It’s all about making a difference The world of IT is an ever-evolving industry with new developments in technology emerging constantly.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Techsol	Exact match	Cardiff, United KingdomHQ recorded Nov 6, 2026	51-200	50 contacts →
	Exact match “Experts in digital transformation, we work closely with you to plan, prepare, and implement integrated technologies to revolutionise the way you work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Eclature Technologies	Exact match	Daresbury, United KingdomHQ recorded Nov 6, 2026	201-500	49 contacts →
	Exact match “Eclature Technologies stands for engineering innovation, excellence, and reliability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Pace Integration	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	48 contacts →
	Exact match “Pace Integration is a unique technology consultancy that solves your integration challenge – focused on enterprise systems integration strategy, architecture and design that is…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “legacy system integration consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 18 of 490 legacy system integration consultants based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,337 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy system integration consultants based in the United Kingdom at a glance

As of Nov 6, 2026

28.2%Verified-email coverage

16.9Average contacts per company

1-10Median size (employees)

35.7%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

280

11-50

138

51-200

201-500

501-1,000

1,001-5,000

10001+

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 490 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 “legacy system integration consultants” 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 2,337 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 November 6, 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.

Legacy system integration consultants by metro

Legacy system integration consultants in London175

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 “legacy system integration consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system integration consultants are there based in the United Kingdom?

RevenueBase identified 490 company matches for legacy system integration consultants associated with the United Kingdom as of November 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?

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

Which city has the most legacy system integration consultants?

London leads with 175 company records, followed by Manchester (18) and Reading (11).

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 2,337 professional contacts with verified work emails tracked across these 490 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 November 6, 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.