Company lists · Data refreshed November 2026

Top 24 Legacy system replacement consultants based in the United Kingdom

RevenueBase identified 396 company matches for legacy system replacement consultants associated with the United Kingdom as of November 2026 and tracks 9,970 professional contacts across them, including 4,999 with verified work emails. London is the largest hub.

This list covers company matches for legacy system replacement 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
396Companies
9,970Contacts tracked
4,999Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 24 largest legacy system replacement consultants based in the United Kingdom

Ranked by team size
Top 24 of 396 company matches for legacy system replacement 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGuildford, United KingdomHQ recorded Nov 6, 2026201-500251 contacts →

Exact match

“Actica Consulting is a business and technology consultancy specialising in the delivery of complex transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchReading, United KingdomHQ recorded Nov 6, 202611-5084 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
3Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20064 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
4Exact matchRichmond, United KingdomHQ recorded Nov 6, 202651-20054 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
5Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Elevation is a technology partner for wholesale & distribution and retail businesses modernising legacy ERPs and bespoke systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20053 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
7Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“Global Vibe Technologies Ltd Empowering Growth Through Strategic IT Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Founded in 1997, iCore is an independent IT Transformation consultancy, providing a pragmatic approach in helping organisations modernise their Technology Strategy and Operations…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchStratford Upon Avon, United KingdomHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Galvinus helps organisations validate whether ERP, HR and CRM platforms will actually work in their organisation before scale, spend or vendor lock-in.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchFleet, United KingdomHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“When IT feels hard work, frustrating, or unreliable, it slows everything down.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBrighton, United KingdomHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Simplex Services is an IT consulting and implementation services provider that responds to clear and robust business needs and helps accelerate the digital transformation of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“Experienced.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“Every business is unique in its setup, processes, and goals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCambridge, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Bridge Partners are an information and communications technology (IT) support services company based in Cambridge and supporting clients in Cambridgeshire, Stevenage and London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMacclesfield, United KingdomHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Transformational technology – just the way you need it.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Community of tech gurus, ready to fulfill your business needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBirmingham, United KingdomHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Optimum PPS is an independent ERP & digital transformation consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Supporting professional services firms with their requirements across setup, adoption, data migration, training, managed services and integrations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLeeds, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Fluid helps businesses work out what technology can do for them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGuildford, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHorwich, United KingdomHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“At Clever IT, we can’t help, helping businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBelfast, United KingdomHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Precept IT is an IT services company with offices in Belfast,London & Dublin operating since 2002.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Jags Consultancy Limited is an IT consulting and software development company founded in 2015, headquartered out of UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“We are a specialist, dedicated team who help firms make good IT decisions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 24 of 396 legacy system replacement consultants based in the United Kingdom

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

As of Nov 6, 2026
50.1%Verified-email coverage
25.2Average contacts per company
1-10Median size (employees)
27.3%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
291
11-50
79
51-200
20
201-500
2
5,001-10,000
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 396 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 replacement 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 4,999 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 replacement consultants 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 “legacy system replacement consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 396 company matches for legacy system replacement 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?

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

Which city has the most legacy system replacement consultants?

London leads with 108 company records, followed by Manchester (14) and Birmingham (9).

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 4,999 professional contacts with verified work emails tracked across these 396 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.