Company lists · Data refreshed September 2026

Top 25 IT consulting and support companies based in the United Kingdom

Name: IT consulting and support 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 27, 2026 5,267 companies tracked

RevenueBase identified 5,267 company matches for IT consulting and support companies associated with the United Kingdom as of September 2026 and tracks 60,212 professional contacts across them, including 22,572 with verified work emails and 3,270 with mobile numbers. London is the largest hub.

This list covers company matches for IT consulting and support 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 27, 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 27, 2026 How this list was built

5,267Companies

60,212Contacts tracked

22,572Verified emails

3,270Mobile numbers

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The 25 largest IT consulting and support companies based in the United Kingdom

Ranked by team size

Top 25 of 5,267 company matches for IT consulting and support companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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	Endava	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	9,653 contacts →
	Exact match “For over two decades, we have been harnessing technology to drive meaningful change.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Softcat	Exact match	Marlow, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	2,886 contacts →
	Exact match “Softcat is a leading provider of IT infrastructure to corporate and public sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	K2 Partnering Solutions	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,417 contacts →
	Exact match “K2 Partnering Solutions is a global provider of unique end-to-end consultative solutions in the enterprise applications, AI, and cloud space.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	NSC Global	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,039 contacts →
	Exact match “Global business doesn’t have to be complicated.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Nasstar	Exact match	Wakefield, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	844 contacts →
	Exact match “Complexity isn’t the enemy.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Excis Compliance	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	616 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 27, 2026 · View company records in RevenueBase
7	Dimension Data UKI	Exact match	Fleet, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	540 contacts →
	Exact match “Dimension Data uses the power of technology to help organisations achieve great things.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	XMA	Exact match	Reading, United KingdomHQ recorded Sep 27, 2026	501-1,000	538 contacts →
	Exact match “Unlock your potential with XMA.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	ESP Global Services	Exact match	Reading, United KingdomHQ recorded Sep 27, 2026	501-1,000	510 contacts →
	Exact match “ESP provides IT support services across the globe.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Trustmarque	Exact match	York, United KingdomHQ recorded Sep 27, 2026	501-1,000	421 contacts →
	Exact match “Trustmarque delivers the value of technology to bring real-life impact.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Zenzero	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	401 contacts →
	Exact match “We believe successful businesses are underpinned by quality IT infrastructure.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	CCS Media Limited Advania UK	Exact match	Chesterfield, United KingdomHQ recorded Sep 27, 2026	201-500	375 contacts →
	Exact match “CCS Media is now officially part of Advania UK, the tech company with people at heart.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Reliance Infosystems	Exact match	West End, United KingdomHQ recorded Sep 27, 2026	201-500	326 contacts →
	Exact match “As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Total IT Global	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	286 contacts →
	Exact match “At Total IT Global, we elevate your digital journey with cutting-edge innovation, to achieve your vision of ‘the enterprise of the future’.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	A&o IT Group	Exact match	Bracknell, United KingdomHQ recorded Sep 27, 2026	201-500	251 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 27, 2026 · View company records in RevenueBase
16	Sharp Brains	Exact match	Slough, United KingdomHQ recorded Sep 27, 2026	51-200	241 contacts →
	Exact match “At Sharp Brains, we are your premier IT Services & Solutions Provider based in the UK, dedicated to meeting your business's unique needs with tailor-made solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Penta Consulting	Exact match	Epsom, United KingdomHQ recorded Sep 27, 2026	51-200	238 contacts →
	Exact match “Penta Consulting provides the people to power your most ambitious projects.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Waterstons	Exact match	Durham, United KingdomHQ recorded Sep 27, 2026	201-500	215 contacts →
	Exact match “We are an IT business with a difference.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	ROCK	Exact match	Pencoed, United KingdomHQ recorded Sep 27, 2026	51-200	211 contacts →
	Exact match “Technology services for the future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Codestone Group	Exact match	Poole, United KingdomHQ recorded Sep 27, 2026	201-500	210 contacts →
	Exact match “WINNERS!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Scan Computers	Exact match	Horwich, United KingdomHQ recorded Sep 27, 2026	201-500	207 contacts →
	Exact match “Scan Business brings together over 30 years of designing and delivering cutting edge technology - for every size of organisation - whether SMB, enterprise or public sector.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Genese Solution	Exact match	Plymouth, United KingdomHQ recorded Sep 27, 2026	51-200	199 contacts →
	Exact match “Genese Solution is a technology service company leading digital transformation with roots in Cloud Computing, Cloud Native Software Development & Cloud Security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	ITPS	Exact match	Chester Le Street, United KingdomHQ recorded Sep 27, 2026	51-200	197 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 27, 2026 · View company records in RevenueBase
24	Cisilion	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	194 contacts →
	Exact match “Combining market-leading tech with world-class service, we go above and beyond expectations to ensure our clients are ready for a digital future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	operum.tech	Exact match	London, United KingdomHQ recorded Sep 27, 2026	n/a	186 contacts →
	Exact match “IT support for businesses in London.” Recorded in the RevenueBase company graph · Sep 27, 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 “IT consulting and support companies”. 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 25 of 5,267 IT consulting and support companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 22,572 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT consulting and support companies based in the United Kingdom at a glance

As of Sep 27, 2026

37.5%Verified-email coverage

5.4%Mobile-number coverage

11.4Average contacts per company

1-10Median size (employees)

26.7%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,535

11-50

1,281

51-200

303

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 29.0d

13,1070–30

8,77831–60

58561–90

2290–180

80180+

Company record updated

Median 92.0d

00–30

6,01731–60

23,69261–90

26,75990–180

3,744180+

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 consulting and support 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 22,572 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 27, 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.

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

How many IT consulting and support companies are there based in the United Kingdom?

RevenueBase identified 5,267 company matches for IT consulting and support 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?

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

Which city has the most IT consulting and support companies?

London leads with 1405 company records, followed by Manchester (96) and Birmingham (86).

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 22,572 professional contacts with verified work emails tracked across these 5,267 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 27, 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.