Company lists · Data verified August 2026

Top 25 Enterprise IT consulting firms based in the United Kingdom

Name: Enterprise IT consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 5,964 companies tracked

There are 5,964 enterprise IT consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 267,261 professional contacts across them, including 60,357 with verified work emails and 18,388 with mobile numbers. London is the largest hub.

This list covers enterprise IT consulting firms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

5,964Companies

267,261Contacts tracked

60,357Verified emails

18,388Mobile numbers

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The 25 largest enterprise IT consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 5,964 enterprise IT consulting firms based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Tech Mahindra	Milton Keynes	10001+	138,625	21,414
2	Sopra Steria	Edinburgh	10001+	37,387	16,784
3	NRI Group	London	10001+	2,871	36
4	Gspann Technologies, INC	London	1,001-5,000	1,874	754
5	PMC	Abingdon	501-1,000	1,429	303
6	First Derivative	Newry	1,001-5,000	1,022	525
7	Miratech	London	1,001-5,000	982	352
8	Cerecore	London	501-1,000	757	381
9	Ahana Systems And Solutions Pvt. LTD	London	501-1,000	645	183
10	XMA	Nottingham	501-1,000	585	308
11	Impressico Business Solutions	London	501-1,000	523	228
12	Dynatech Systems	Leeds	501-1,000	478	249
13	Leader Investment Group - LIG	London	501-1,000	452	42
14	Trustmarque	York	501-1,000	422	236
15	ACORA	Tufton Warren	501-1,000	421	302
16	Zenzero	Coventry	501-1,000	403	281
17	Seargin	London	501-1,000	275	188
18	V R Della Infotech Inc- V R Della Group	London	501-1,000	253	46
19	Proact IT Group AB	Leeds	1,001-5,000	224	79
20	Capita IT Professional Services	Haywards Heath	10001+	209	30
21	Ibridge, LLC	London	501-1,000	183	35
22	Esquare	Birmingham	501-1,000	133	27
23	C Ahead Digital	London	1,001-5,000	122	40
24	Baseel Partners	London	1,001-5,000	78	26
25	Andersen People	London	1,001-5,000	50	15

Showing 25 of 5,964 enterprise IT consulting firms based in the United Kingdom

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Enterprise IT consulting firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 2160 HQs

18,388Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

3,809

11-50

1,398

51-200

447

201-500

501-1,000

1,001-5,000

10001+

Enterprise IT consulting firms by metro

Metro	Companies
Enterprise IT consulting firms in London	2160
Enterprise IT consulting firms in Manchester	142
Enterprise IT consulting firms in Birmingham	89
Enterprise IT consulting firms in Reading	70
Enterprise IT consulting firms in Bristol	67
Enterprise IT consulting firms in Leeds	63
Enterprise IT consulting firms in Edinburgh	55

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise IT consulting firms”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 5,964 enterprise IT consulting firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Tech Mahindra, headquartered in Milton Keynes, tops this list with the largest team on record.

Which city has the most enterprise IT consulting firms?

London leads with 2160 headquartered companies, followed by Manchester (142) and Birmingham (89).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 60,357 verified decision-maker contacts tracked across these 5,964 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.