Company lists · Data refreshed September 2026

Top 25 Tx IT services companies based in the United Kingdom

RevenueBase identified 3,151 company matches for tx IT services companies associated with the United Kingdom as of September 2026 and tracks 35,996 professional contacts across them, including 13,176 with verified work emails. London is the largest hub.

This list covers company matches for tx IT services 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 21, 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 21, 2026 How this list was built
3,151Companies
35,996Contacts tracked
13,176Verified emails
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The 25 largest tx IT services companies based in the United Kingdom

Ranked by team size
Top 25 of 3,151 company matches for tx IT services companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchWakefield, United KingdomHQ recorded Sep 21, 20261,001-5,000844 contacts →

Exact match

“Complexity isn’t the enemy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchStaines-upon-thames, United KingdomHQ recorded Sep 21, 2026201-500764 contacts →

Exact match

“MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchGateshead, United KingdomHQ recorded Sep 21, 2026201-500748 contacts →

Exact match

“TSG: The Technology Partner for Ambitious Businesses We're not a reseller.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000667 contacts →

Exact match

“Innovation is at the core of Exponential-e, and has been since our inception in 2002.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchFleet, United KingdomHQ recorded Sep 21, 20261,001-5,000540 contacts →

Exact match

“Dimension Data uses the power of technology to help organisations achieve great things.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchReading, United KingdomHQ recorded Sep 21, 2026501-1,000538 contacts →

Exact match

“Unlock your potential with XMA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchAlderley Edge, United KingdomHQ recorded Sep 21, 2026201-500337 contacts →

Exact match

“Chess ICT is the UKs leading independent technology service provider, employing more than 240 people across the UK and supporting over customers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchHemel Hempstead, United KingdomHQ recorded Sep 21, 2026201-500295 contacts →

Exact match

“boxxe is a leading provider of hardware, software, and managed IT services for public and private sector organisations.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchBirmingham, United KingdomHQ recorded Sep 21, 2026201-500272 contacts →

Exact match

“At Intercity, we help you Do More with Technology, Cloud & Security, Communications and Managed IT services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchGateshead, United KingdomHQ recorded Sep 21, 2026201-500266 contacts →

Exact match

“Welcome to Aspire Technology Solutions!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchBracknell, United KingdomHQ recorded Sep 21, 2026201-500251 contacts →

Exact match

“A&O IT Group, a global leader in managed IT services, brings over 50 years of expertise and operates in over 130 countries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchGreenham, United KingdomHQ recorded Sep 21, 2026201-500243 contacts →

Exact match

“Roc Technologies delivers transformational IT solutions to public and private sector organisations across the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchPentwyn, United KingdomHQ recorded Sep 21, 2026201-500229 contacts →

Exact match

“Vista is the UK market leader in delivering IT technology deployment and support services in retail, hospitality, healthcare and entertainment sectors.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500227 contacts →

Exact match

“Wanstor: Experience First | AI Fluent | Secure by Default Wanstor is a trusted Managed IT Services company that helps ambitious organisations leverage technology to achieve better…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchNr Cardiff, United KingdomHQ recorded Sep 21, 2026n/a208 contacts →

Exact match

“Helping UK businesses reduce IT downtime, strengthen cyber security and adopt AI safely, without the cost and complexity of managing IT in-house.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLincoln, United KingdomHQ recorded Sep 21, 2026501-1,000203 contacts →

Exact match

“Multi-award-winning GCI is one of the UK’s leading ICT Service Providers, with offices across the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchChester Le Street, United KingdomHQ recorded Sep 21, 202651-200197 contacts →

Exact match

“Our team has decades of experience in delivering complex, challenging projects that help clients across the private, public and not-for-profit sectors do business better.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchFareham, United KingdomHQ recorded Sep 21, 202651-200184 contacts →

Exact match

“Vohkus is a rapidly growing, highly agile UK IT supplier specialising in end-to-end IT supply, enterprise infrastructure solutions, and comprehensive managed services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchWokingham, United KingdomHQ recorded Sep 21, 2026201-500184 contacts →

Exact match

“At Xeretec, Happily Ever After isn’t just a phrase-it’s a promise.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchSalford Quays, United KingdomHQ recorded Sep 21, 202651-200174 contacts →

Exact match

“LIMA has been solving business challenges since 1997, through the design and delivery of award-winning IT solutions and services across a range of sectors and industries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchWare, United KingdomHQ recorded Sep 21, 202651-200145 contacts →

Exact match

“Your next generation MSP.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200141 contacts →

Exact match

“Deepscale Technologies provide data center, enterprise & managed IT solutions across the globe that enhance how businesses operate.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchStockton-on-tees, United KingdomHQ recorded Sep 21, 2026201-500130 contacts →

Exact match

“razorblue is a people-focused managed IT partner, committed to helping businesses grow, adapt and succeed through technology.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchWhiteley, United KingdomHQ recorded Sep 21, 202651-200123 contacts →

Exact match

“Tailor Made Technologies (TMT) are experts in managed IT, cyber security, and communication solutions, TMT is on a mission to help small and medium-sized enterprises leverage…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchChesterfield, United KingdomHQ recorded Sep 21, 202651-200120 contacts →

Exact match

“Central Technology is a trusted IT partner delivering Managed IT Support, Cloud, Cyber Security and Telecom Solutions to organisations across the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 3,151 tx IT services companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 13,176 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tx IT services companies based in the United Kingdom at a glance

As of Sep 21, 2026
36.6%Verified-email coverage
11.4Average contacts per company
1-10Median size (employees)
19.6%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
2,025
11-50
874
51-200
165
201-500
44
501-1,000
8
1,001-5,000
11
5,001-10,000
1
10001+
2

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 3,151 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 “tx IT services 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 13,176 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 21, 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.

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 “tx IT services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tx IT services companies are there based in the United Kingdom?

RevenueBase identified 3,151 company matches for tx IT services 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?

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

Which city has the most tx IT services companies?

London leads with 619 company records, followed by Manchester (59) and Birmingham (39).

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 13,176 professional contacts with verified work emails tracked across these 3,151 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,151 tx IT services companies based in the United Kingdom. Start with a free account, no credit card.

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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.