Company lists · Data refreshed September 2026

Top 25 IT support firms based in the United Kingdom

RevenueBase identified 3,338 company matches for IT support firms associated with the United Kingdom as of September 2026 and tracks 21,187 professional contacts across them, including 8,387 with verified work emails. London is the largest hub.

This list covers company matches for IT support firms 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
3,338Companies
21,187Contacts tracked
8,387Verified emails
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The 25 largest IT support firms based in the United Kingdom

Ranked by team size
Top 25 of 3,338 company matches for IT support firms 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 matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,000616 contacts →

Exact match

“Excis is a trusted global IT services company, delivering agile, multilingual support across 150+ countries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchReading, United KingdomHQ recorded Sep 21, 2026501-1,000510 contacts →

Exact match

“ESP provides IT support services across the globe.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchGrimsby, United KingdomHQ recorded Sep 21, 2026n/a467 contacts →

Exact match

“At DBS we provide IT and telecomms support to businesses nationwide, helping them to stay connected.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact 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
5Exact 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
6Exact matchLondon, United KingdomHQ recorded Sep 21, 2026n/a186 contacts →

Exact match

“IT support for businesses in London.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact 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
8Exact 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
9Exact matchBasildon, United KingdomHQ recorded Sep 21, 202651-200119 contacts →

Exact match

“Utilize Plc is an award-winning Technology Company boasting over 25 years of industry expertise.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchNewton-le-willows, United KingdomHQ recorded Sep 21, 202611-50114 contacts →

Exact match

“We are celebrating over 40 years of MCC Digital!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20096 contacts →

Exact match

“Matsco Solutions is a global managed IT service provider built exclusively for the financial services industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20096 contacts →

Exact match

“Promise to deliver Servicing Certainty worldwide.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchTamworth, United KingdomHQ recorded Sep 21, 202651-20095 contacts →

Exact match

“Quiss Technology plc provides fully managed IT support for businesses across the UK, exploiting technology to deliver commercial advantages and business benefits to companies in a…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchGuildford, United KingdomHQ recorded Sep 21, 202651-20093 contacts →

Exact match

“ramsac provide so much more than just IT support.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchAbingdon, United KingdomHQ recorded Sep 21, 202651-20093 contacts →

Exact match

“We are a leading IT company offering a complete out-sourced IT solution to organisations across the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20089 contacts →

Exact match

“Ultimate IT solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5087 contacts →

Exact match

“MR has been supplying computers, peripherals and software and support services to businesses of all sizes since 1983.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20084 contacts →

Exact match

“As an IT leader, your day shouldn’t disappear to dealing with issues - that’s why we're here.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchCirencester, United KingdomHQ recorded Sep 21, 202651-20082 contacts →

Exact match

“At Kubus, we enhance our customers’ experiences by simplifying and managing complex IT solutions, delivered through expertise, world class partnerships, with a global reach.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchWooburn Green, United KingdomHQ recorded Sep 21, 202651-20076 contacts →

Exact match

“CST is an I.T.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCanterbury, United KingdomHQ recorded Sep 21, 202651-20072 contacts →

Exact match

“ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchMilton Keynes, United KingdomHQ recorded Sep 21, 202651-20070 contacts →

Exact match

“Aztech IT Solutions is trusted by more than one hundred growing businesses across the UK to deliver professional, proactive IT support services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchSevenoaks, United KingdomHQ recorded Sep 21, 202651-20068 contacts →

Exact match

“Akita is a leading provider of IT support, managed services and business applications.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchBelfast, United KingdomHQ recorded Sep 21, 202651-20066 contacts →

Exact match

“We create, design, deliver and support informed & intelligent strategies to navigate shifting technology, keeping organisations like yours effective & secure.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20063 contacts →

Exact match

“Field Techs Services LTD is a best one IT support providing company in EMEA, APAC and LATUM.”

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

Showing 25 of 3,338 IT support firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 8,387 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT support firms based in the United Kingdom at a glance

As of Sep 21, 2026
39.6%Verified-email coverage
6.3Average contacts per company
1-10Median size (employees)
17.6%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
2,302
11-50
849
51-200
132
201-500
20
501-1,000
1
1,001-5,000
3
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 3,338 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 “IT support firms” 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 8,387 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 “IT support firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT support firms are there based in the United Kingdom?

RevenueBase identified 3,338 company matches for IT support firms 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?

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

Which city has the most IT support firms?

London leads with 587 company records, followed by Birmingham (50) and Manchester (50).

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 8,387 professional contacts with verified work emails tracked across these 3,338 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.

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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.