Company lists · Data refreshed September 2026

Top 23 IT services and IT consulting companies based in the United Kingdom

Name: IT services and IT consulting 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 8,119 companies tracked

RevenueBase identified 8,119 company matches for IT services and IT consulting companies associated with the United Kingdom as of September 2026 and tracks 131,041 professional contacts across them, including 38,466 with verified work emails and 7,085 with mobile numbers. London is the largest hub.

This list covers company matches for IT services and IT consulting 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

8,119Companies

131,041Contacts tracked

38,466Verified emails

7,085Mobile numbers

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The 23 largest IT services and IT consulting companies based in the United Kingdom

Ranked by team size

Top 23 of 8,119 company matches for IT services and IT consulting 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	Computer Futures	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	2,673 contacts →
	Exact match “Building tomorrow’s tech landscape together Computer Futures is a Technology specialist, part of SThree, the global STEM workforce consultancy.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	CSC UKI	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	1,569 contacts →
	Exact match “HPE Enterprise Services and CSC are now @DXCTechnology, the leading independent, end-to-end #IT services company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Noventiq	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	1,508 contacts →
	Exact match “Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	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
7	Logicalis	Exact match	Maidenhead, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	1,372 contacts →
	Exact match “We are Architects of Change™.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Genisys Group	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,178 contacts →
	Exact match “Genisys Group is a new age global information technology and business process services company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	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
10	Advania UK	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	910 contacts →
	Exact match “We empower people to create sustainable value with the clever use of technology.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Oliver James	Exact match	Manchester, United KingdomHQ recorded Sep 27, 2026	501-1,000	870 contacts →
	Exact match “At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	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
13	Bytes Software Services	Exact match	Leatherhead, United KingdomHQ recorded Sep 27, 2026	501-1,000	766 contacts →
	Exact match “Bytes is a leading provider of world-class IT solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	MTI	Exact match	Staines-upon-thames, United KingdomHQ recorded Sep 27, 2026	201-500	764 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 27, 2026 · View company records in RevenueBase
15	TSG	Exact match	Gateshead, United KingdomHQ recorded Sep 27, 2026	201-500	748 contacts →
	Exact match “TSG: The Technology Partner for Ambitious Businesses We're not a reseller.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	KERV	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	742 contacts →
	Exact match “Kerv exists to use the power of technology for good: for our customers, our people, our communities and the planet.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Exponential-E	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	667 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 27, 2026 · View company records in RevenueBase
18	Systal Technology Solutions	Exact match	Glasgow, United KingdomHQ recorded Sep 27, 2026	501-1,000	647 contacts →
	Exact match “Systal is a global managed network, cloud and security transformation specialist.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	MASS	Exact match	St Neots, United KingdomHQ recorded Sep 27, 2026	201-500	640 contacts →
	Exact match “MASS, part of the Cohort plc group, helps you realise the value of your data.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Node4	Exact match	Derby, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	628 contacts →
	Exact match “Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	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
22	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
23	Telefónica Tech EN	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	539 contacts →
	Exact match “We are accelerating the roll-out of technology through Cybersecurity, Cloud, IoT, Data & Artificial Intelligence Follow on our social media channels: • X: https://x.com/TefTech_EN…” 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 services and IT consulting 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 23 of 8,119 IT services and IT consulting companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 38,466 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 27, 2026

29.4%Verified-email coverage

5.4%Mobile-number coverage

16.1Average contacts per company

1-10Median size (employees)

30.4%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

5,147

11-50

2,078

51-200

567

201-500

144

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

22,3600–30

14,91231–60

99961–90

3190–180

164180+

Company record updated

Median 92.0d

00–30

12,06631–60

47,88161–90

63,62590–180

7,469180+

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 services and IT consulting 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 38,466 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 services and IT consulting 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 services and IT consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 8,119 company matches for IT services and IT consulting 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 services and IT consulting companies?

London leads with 2467 company records, followed by Manchester (183) and Birmingham (135).

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 38,466 professional contacts with verified work emails tracked across these 8,119 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.