Company lists · Data refreshed September 2026

Top 24 IT services and consulting companies based in London, United Kingdom

Name: IT services and consulting companies 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 4,487 companies tracked

RevenueBase identified 4,487 company matches for IT services and consulting companies associated with London, United Kingdom as of September 2026 and tracks 115,327 professional contacts across them, including 31,928 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for IT services and consulting companies associated with London, 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

4,487Companies

115,327Contacts tracked

31,928Verified emails

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The 24 largest IT services and consulting companies based in London, United Kingdom

Ranked by team size

Top 24 of 4,487 company matches for IT services and consulting companies based in London, 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	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
3	Photon	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	5,203 contacts →
	Exact match “Photon, a global leader in AI and digital solutions, helps clients accelerate AI adoption and embrace DigitalHyper-expansion® to ‘make tomorrow happen today’.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	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
15	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
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	Huxley	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	736 contacts →
	Exact match “Shaping the future of finance Huxley is an IT specialist, part of SThree, the global STEM workforce consultancy.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	VML Enterprise Solutions	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	697 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	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
20	Acuvate	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	545 contacts →
	Exact match “At Acuvate, we empower enterprises to accelerate their Next gen transformation journeys with an AI-First approach.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Alten LTD - UK	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	529 contacts →
	Exact match “We are a leading Engineering and IT consultancy operating across all sectors in 30 different countries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Hitachi Solutions UK	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	422 contacts →
	Exact match “Our team of world-class professionals across the globe work together to innovate and enable sustainable business transformation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Zenitech	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	408 contacts →
	Exact match “Zenitech creates technology to transform businesses.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	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

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 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 24 of 4,487 IT services and consulting companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 31,928 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 27, 2026

27.7%Verified-email coverage

25.7Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

2,568

11-50

1,222

51-200

465

201-500

111

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 4,487 companies.

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 London, United Kingdom whose business descriptions match “IT services and 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 31,928 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 companies by metro in the United Kingdom

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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 4,487 company matches for IT services and consulting companies associated with London, 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 in the United Kingdom has the most IT services and consulting companies?

London leads the United Kingdom with 4,487 company records, followed by Manchester (271) and Birmingham (184).

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 31,928 professional contacts with verified work emails tracked across these 4,487 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.