Company lists · Data refreshed September 2026

Top 25 Ict consulting firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 26, 2026 925 companies tracked

RevenueBase identified 925 ict consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 14,368 professional contacts across them, including 4,262 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers ict consulting firms 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 26, 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 26, 2026 86% judged on-target in blind review

925Companies

14,368Contacts tracked

4,262Verified emails

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The 25 largest ict consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 925 ict consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 26, 2026. RevenueBase Smart Search rates how each company's information relates to ict consulting firms: 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	Computer Futures	Indirect evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
2	Noventiq	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	5,001-10,000	1,508 contacts →
	Indirect evidence “Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.” Source: RevenueBase Database · checked Sep 26, 2026
3	Hirexa Solutions	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	201-500	377 contacts →
	Indirect evidence “Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Source: RevenueBase Database · checked Sep 26, 2026
4	Cartesian	Partial evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
5	Flat Rock Technology	Indirect evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
6	Cisilion	Indirect evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
7	IBU	Partial evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
8	Opticoreit	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	120 contacts →
	Indirect 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 26, 2026
9	Glue Reply	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	118 contacts →
	Indirect 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 26, 2026
10	Axiom Software Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 26, 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 26, 2026
11	Conosco	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	105 contacts →
	Indirect evidence “Cybersecurity specialists providing technology and telecoms solutions that gives you the leadership, experience and resilience you need to build and secure the future of work.” Source: RevenueBase Database · checked Sep 26, 2026
12	Kddi Europe	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	201-500	104 contacts →
	Partial evidence “KDDI Europe is the European headquarters of the Fortune Global 500 KDDI Corporation, delivering cutting-edge ICT and cybersecurity solutions that fuse Japan’s renowned precision…” Source: RevenueBase Database · checked Sep 26, 2026
13	Oryxalign	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	99 contacts →
	Indirect evidence “OryxAlign creates true alignment that delivers the right outcomes for all.” Source: RevenueBase Database · checked Sep 26, 2026
14	ITC Secure	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	87 contacts →
	Indirect evidence “ITC Secure is an advisory-led cyber security services company.” Source: RevenueBase Database · checked Sep 26, 2026
15	Intuition IT Intuitive Technology Recruitment	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	11-50	84 contacts →
	Indirect evidence “IT'S NOT RECRUITMENT.” Source: RevenueBase Database · checked Sep 26, 2026
16	SAT Microsystems	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	84 contacts →
	Indirect evidence “SAT Microsystems is a proven IT Service Provider leader in developing innovative solutions that reduce business costs and complexity in Saudi Arabia, UAE, and 8 other countries.” Source: RevenueBase Database · checked Sep 26, 2026
17	Baseel Partners	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	1,001-5,000	78 contacts →
	Partial evidence “We offer a broad portfolio of IT and consulting services covering Governance and Strategy, Cloud, Data, Cybersecurity, Infrastructure and Applications, Managed IT and Security.” Source: RevenueBase Database · checked Sep 26, 2026
18	ALDIA	Partial evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	73 contacts →
	Partial evidence “ALDIA is an international consulting firm specializing in IT & Engineering, dedicated to driving digital transformation and innovation.” Source: RevenueBase Database · checked Sep 26, 2026
19	Instant On IT	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	69 contacts →
	Indirect evidence “Helping businesses accomplish more IT Management, Strategy and Cloud, IT Security and AI Solutions Office locations: Central London, New Zealand” Source: RevenueBase Database · checked Sep 26, 2026
20	6point6 Part Of Accenture	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	201-500	68 contacts →
	Indirect evidence “6point6 drives the right change in an organisation through the positive impact of technology.” Source: RevenueBase Database · checked Sep 26, 2026
21	Axtrum Technologies	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	68 contacts →
	Indirect evidence “We don’t only deliver a change – We deliver a change that adds value and delivers business benefit that is real, tangible and measurable!” Source: RevenueBase Database · checked Sep 26, 2026
22	Camelot	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	66 contacts →
	Indirect evidence “We are a network of independent consultants who are ex-C-Suite Execs/Senior Managers who have all been there and done it in top organisations, mainly in insurance but others as…” Source: RevenueBase Database · checked Sep 26, 2026
23	Wizard Group	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	61 contacts →
	Indirect evidence “The Wizard group consists of 4 companies all within the information technology and cybersecurity industry.” Source: RevenueBase Database · checked Sep 26, 2026
24	Northdoor PLC	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	60 contacts →
	Indirect evidence “Northdoor is an award-winning London-based IT consultancy and managed services provider with over 30 years’ experience.” Source: RevenueBase Database · checked Sep 26, 2026
25	Daintta	Indirect evidence	London, United KingdomHQ checked Sep 26, 2026	51-200	60 contacts →
	Indirect evidence “We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Source: RevenueBase Database · checked Sep 26, 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: ict consulting firms. 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 ict consulting firms.
Partial evidence: Its own public description names part of ict consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ict consulting firms. 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 925 ict consulting firms based in London, United Kingdom

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Ict consulting firms based in London, United Kingdom at a glance

As of Sep 26, 2026

29.7%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

525

11-50

264

51-200

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 925 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 ict consulting firms, 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 “ict consulting firms”. 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 ict consulting firms), 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 ict consulting firms, 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, 4,262 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 26, 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.

Ict consulting firms by metro in the United Kingdom

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 ict consulting firms, 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 ict consulting firms are there based in London, United Kingdom?

RevenueBase identified 925 ict consulting firms 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?

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

Which city in the United Kingdom has the most ict consulting firms?

London leads the United Kingdom with 925 headquartered companies, followed by Manchester (65) and Birmingham (42).

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 4,262 verified decision-maker contacts tracked across these 925 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 26, 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.