Company lists · Data refreshed September 2026

Top 25 IT consulting and services based in London, United Kingdom

Name: IT consulting and services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 2,638 companies tracked

RevenueBase identified 2,638 IT consulting and services headquartered in London, United Kingdom as of September 2026 and tracks 58,769 professional contacts across them, including 15,895 with verified work emails. London is the largest hub.

This list covers IT consulting and services headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

2,638Companies

58,769Contacts tracked

15,895Verified emails

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The 25 largest IT consulting and services based in London, United Kingdom

Ranked by team size

Top 25 of 2,638 IT consulting and services based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting and services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Endava	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	10001+	9,653 contacts →
	Indirect evidence “For over two decades, we have been harnessing technology to drive meaningful change.” Source: RevenueBase Database · checked Sep 27, 2026
2	Computer Futures	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	2,673 contacts →
	Indirect evidence “Building tomorrow’s tech landscape together Computer Futures is a Technology specialist, part of SThree, the global STEM workforce consultancy.” Source: RevenueBase Database · checked Sep 27, 2026
3	K2 Partnering Solutions	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,417 contacts →
	Indirect evidence “K2 Partnering Solutions is a global provider of unique end-to-end consultative solutions in the enterprise applications, AI, and cloud space.” Source: RevenueBase Database · checked Sep 27, 2026
4	CDW UK	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,245 contacts →
	Indirect evidence “We offer a full-stack, full-lifecycle approach to technology, leveraging our extensive solutions, services and brand relationships to meet your organization’s unique needs.” Source: RevenueBase Database · checked Sep 27, 2026
5	NSC Global	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,039 contacts →
	Indirect evidence “Global business doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 27, 2026
6	Delta Capita	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	976 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
7	Advania UK	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	910 contacts →
	Indirect evidence “We empower people to create sustainable value with the clever use of technology.” Source: RevenueBase Database · checked Sep 27, 2026
8	KERV	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	742 contacts →
	Indirect evidence “Kerv exists to use the power of technology for good: for our customers, our people, our communities and the planet.” Source: RevenueBase Database · checked Sep 27, 2026
9	VML Enterprise Solutions	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	5,001-10,000	697 contacts →
	Indirect evidence “Follow us now at WPP Enterprise Solutions, WPP’s global business transformation unit, designing, building and operating the growth systems that competitive businesses rely on.” Source: RevenueBase Database · checked Sep 27, 2026
10	Zenzero	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	401 contacts →
	Partial evidence “We believe successful businesses are underpinned by quality IT infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026
11	Ubique Systems	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	333 contacts →
	Partial evidence “Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Source: RevenueBase Database · checked Sep 27, 2026
12	Cartesian	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	302 contacts →
	Partial evidence “Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…” Source: RevenueBase Database · checked Sep 27, 2026
13	Total IT Global	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	286 contacts →
	Partial evidence “At Total IT Global, we elevate your digital journey with cutting-edge innovation, to achieve your vision of ‘the enterprise of the future’.” Source: RevenueBase Database · checked Sep 27, 2026
14	Flat Rock Technology	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	231 contacts →
	Indirect evidence “Since 2008, Flat Rock Technology, a software engineering, SI, Cloud DevOps, Cyber Security, and Customer Experience (CX) company, has been at the forefront of providing innovative…” Source: RevenueBase Database · checked Sep 27, 2026
15	Tmotions Global Limited	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	228 contacts →
	Indirect evidence “TMotions is inspired by forward-thinking businesses, who are now looking past recovery and shifting into the growth mode.” Source: RevenueBase Database · checked Sep 27, 2026
16	Natilik	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	222 contacts →
	Indirect evidence “Natilik is your technology solutions partner and confident guide to digital transformation, specialising in a range of solutions to help you achieve your goals and drive real…” Source: RevenueBase Database · checked Sep 27, 2026
17	Cisilion	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	194 contacts →
	Indirect evidence “Combining market-leading tech with world-class service, we go above and beyond expectations to ensure our clients are ready for a digital future.” Source: RevenueBase Database · checked Sep 27, 2026
18	CVL	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	n/a	165 contacts →
	Indirect evidence “Strategic development for already dynamic businesses, successful mergers & acquisitions between household names, technology planning in cutting edge industries and real-world…” Source: RevenueBase Database · checked Sep 27, 2026
19	Interex Group	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	160 contacts →
	Indirect evidence “InterEx Group is becoming the strategic partner of choice for organizations undergoing digital, business, and technology transformation.” Source: RevenueBase Database · checked Sep 27, 2026
20	Dogma Group	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	149 contacts →
	Indirect evidence “The Dogma Group is a progressive digital transformation company committed to delivering the digital imperative and becoming the most trusted advisor to its clientele.” Source: RevenueBase Database · checked Sep 27, 2026
21	IBU	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	139 contacts →
	Partial evidence “We are the most trusted consulting & Information Technology service partner, who has been thriving hard to deliver customer-centric and proven global competence to our clients all…” Source: RevenueBase Database · checked Sep 27, 2026
22	Opticoreit	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	120 contacts →
	Partial evidence “OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Source: RevenueBase Database · checked Sep 27, 2026
23	Glue Reply	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	118 contacts →
	Partial evidence “WHO WE ARE Glue Reply is a business consultancy that strives to help its clients achieve their future potential by developing solutions that often for the first time align IT…” Source: RevenueBase Database · checked Sep 27, 2026
24	TDM Group	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	115 contacts →
	Partial evidence “TDM Group Ltd is a global Managed Business IT Service (M-BiTS) provider – our holistic approach to managing and implementing IT considers the impact technology has on the entire…” Source: RevenueBase Database · checked Sep 27, 2026
25	Axiom Software Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	114 contacts →
	Partial evidence “Axiom is a global information technology, consulting and outsourcing company and services provider.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: IT consulting and services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names IT consulting and services.
Partial evidence: Its own public description names part of IT consulting and services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT consulting and services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,638 IT consulting and services based in London, United Kingdom

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IT consulting and services based in London, United Kingdom at a glance

As of Sep 27, 2026

27.0%Verified-email coverage

22.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

1,613

11-50

683

51-200

234

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 2,638 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT consulting and services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “IT consulting and services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names IT consulting and services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among IT consulting and services, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 15,895 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

IT consulting and services by metro in the United Kingdom

IT consulting and services in London2638
IT consulting and services in Manchester188
IT consulting and services in Birmingham126
IT consulting and services in Bristol96
IT consulting and services in Reading90
IT consulting and services in Glasgow83
IT consulting and services in Edinburgh81
IT consulting and services in Leeds79
IT consulting and services in Milton Keynes63
IT consulting and services in Cambridge52
IT consulting and services in Sheffield51
IT consulting and services in Nottingham43
IT consulting and services in Coventry42
IT consulting and services in Liverpool42
IT consulting and services in Cardiff39
IT consulting and services in Harrow39
IT consulting and services in Leicester38
IT consulting and services in Northampton38
IT consulting and services in Oxford37
IT consulting and services in Slough35
IT consulting and services in Ilford34
IT consulting and services in Newcastle Upon Tyne33
IT consulting and services in Derby32
IT consulting and services in Southampton31
IT consulting and services in Bournemouth30
IT consulting and services in Brighton29
IT consulting and services in Poole29
IT consulting and services in Watford29
IT consulting and services in Aberdeen27
IT consulting and services in Basingstoke27
IT consulting and services in York27
IT consulting and services in Swindon26
IT consulting and services in Luton25
IT consulting and services in Peterborough25
IT consulting and services in Warrington25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names IT consulting and services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many IT consulting and services are there based in London, United Kingdom?

RevenueBase identified 2,638 IT consulting and services headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Endava, headquartered in London, tops this list with the largest team on record.

Which city has the most IT consulting and services?

London leads with 2638 headquartered companies, followed by Manchester (188) and Birmingham (126).

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 15,895 verified decision-maker contacts tracked across these 2,638 companies.

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 Smart Search, 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.