Company lists · Data refreshed September 2026

Top 25 IT services and consulting firms based in the United Kingdom

Name: IT services and consulting firms 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 12,477 companies tracked

RevenueBase identified 12,477 company matches for IT services and consulting firms associated with the United Kingdom as of September 2026 and tracks 589,340 professional contacts across them, including 206,198 with verified work emails and 51,411 with mobile numbers. London is the largest hub.

This list covers company matches for IT services and consulting 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 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

12,477Companies

589,340Contacts tracked

206,198Verified emails

51,411Mobile numbers

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The 25 largest IT services and consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 12,477 company matches for IT services and consulting firms 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	EY	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	375,085 contacts →
	Exact match “EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	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
3	CAPCO	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	7,396 contacts →
	Exact match “Capco, a Wipro company, is a global technology and management consultancy specializing in driving digital transformation in the financial services industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Accenture UK & Ireland	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	3,720 contacts →
	Exact match “Accenture helps the world’s leading enterprises reinvent by building their digital core and unleashing the power of AI to create value at speed for organisations across industries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Micro Focus	Exact match	Newbury, United KingdomHQ recorded Sep 27, 2026	10001+	3,040 contacts →
	Exact match “OpenText has completed the purchase of Micro Focus.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	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
7	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
8	Baringa	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	2,179 contacts →
	Exact match “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Avance Consulting	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	1,927 contacts →
	Exact match “Avance Consulting is a global organization focused on delivering innovative talent solution services to some of the most renowned companies in the world, across industries that…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Davies	Exact match	City Of London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	1,840 contacts →
	Exact match “We are a specialist professional services and technology firm, working in partnership with leading insurance, highly regulated and global businesses.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Nashtech	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,611 contacts →
	Exact match “We are experts in technology, delivering smart solutions that solve business challenges and create value.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	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
13	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
14	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
15	PMC	Exact match	Abingdon, United KingdomHQ recorded Sep 27, 2026	501-1,000	1,417 contacts →
	Exact match “PMC combines consulting with expert software engineering and 24x7x365 managed services to deliver high-quality technology services and solutions across retail, D2C, and broader…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	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
17	JLT Group	Exact match	London, United KingdomHQ recorded Sep 27, 2026	n/a	1,361 contacts →
	Exact match “As of April 1, 2019, JLT Group is now part of Marsh & McLennan Companies (MMC).” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	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
19	Equal Experts	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,172 contacts →
	Exact match “We are honoured to be recognised as one of the Top 10 Best Places to Work in the UK for the third year running, according to Glassdoor’s prestigious 2026 list.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	BJSS	Exact match	Leeds, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,078 contacts →
	Exact match “BJSS is an award-winning technology and engineering consultancy for business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	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
22	Amdaris	Exact match	Bristol, United KingdomHQ recorded Sep 27, 2026	501-1,000	988 contacts →
	Exact match “Amdaris, an Insight Company delivers innovative Software Development, Product Design, Digital Transformation, Application Support and Consultancy Services from our UK headquarters…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	First Derivative	Exact match	Newry, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	988 contacts →
	Exact match “First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Delta Capita	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	976 contacts →
	Exact match “Delta Capita is a leading global Capital Markets consulting, managed services, and technology provider with a unique combination of experience in financial services and capability…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Mindera	Exact match	Leicester, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	944 contacts →
	Exact match “Mindera is a global consulting and engineering company with 1100+ people, delivering technology solutions across 9 locations, from Brazil to Australia.” 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 consulting firms”. 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 12,477 IT services and consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 206,198 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 27, 2026

35.0%Verified-email coverage

8.7%Mobile-number coverage

47.2Average contacts per company

1-10Median size (employees)

35.9%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

8,184

11-50

2,910

51-200

873

201-500

228

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 30.0d

114,7660–30

84,68631–60

5,08061–90

31190–180

2,215180+

Company record updated

Median 78.0d

00–30

87,17831–60

256,41861–90

211,62490–180

37,592180+

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 consulting 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 206,198 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 consulting firms 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 consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 12,477 company matches for IT services and consulting 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?

EY 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 consulting firms?

London leads with 4477 company records, followed by Manchester (271) and Birmingham (187).

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 206,198 professional contacts with verified work emails tracked across these 12,477 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.