Company lists · Data refreshed September 2026

Top 25 Freelancer IT consulting firms based in the United Kingdom

Name: Freelancer IT 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 30, 2026 2,392 companies tracked

RevenueBase identified 2,392 freelancer IT consulting firms headquartered in the United Kingdom as of September 2026 and tracks 35,602 professional contacts across them, including 15,974 with verified work emails and 2,075 with mobile numbers. London is the largest hub.

This list covers freelancer 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 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 30, 2026 86% judged on-target in blind review

2,392Companies

35,602Contacts tracked

15,974Verified emails

2,075Mobile numbers

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

Ranked by team size

Top 25 of 2,392 freelancer IT consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to freelancer IT 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	Endava	Indirect evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
2	Baringa	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	2,179 contacts →
	Partial evidence “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Source: RevenueBase Database · checked Sep 30, 2026
3	K2 Partnering Solutions	Indirect evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
4	BIG 4 Consultancy Firm	Indirect evidence	Liverpool, United KingdomHQ checked Sep 30, 2026	n/a	363 contacts →
	Indirect evidence “This is a page for all contractors and consultants to join, where you are unable to disclose client relationship.” Source: RevenueBase Database · checked Sep 30, 2026
5	Delaware United Kingdom & Ireland	Indirect evidence	Bristol, United KingdomHQ checked Sep 30, 2026	1,001-5,000	348 contacts →
	Indirect evidence “Our mission is to help our clients reach their full potential, by applying our common sense, business experience and passion for technology.” Source: RevenueBase Database · checked Sep 30, 2026
6	Ubique Systems	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
7	Cartesian	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
8	Elixirr	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	275 contacts →
	Partial evidence “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Source: RevenueBase Database · checked Sep 30, 2026
9	Moorhouse B Corp Certified	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	247 contacts →
	Partial evidence “We’re a dynamic consulting firm, focused on delivering change.” Source: RevenueBase Database · checked Sep 30, 2026
10	Sharp Brains	Partial evidence	Slough, United KingdomHQ checked Sep 30, 2026	51-200	241 contacts →
	Partial evidence “At Sharp Brains, we are your premier IT Services & Solutions Provider based in the UK, dedicated to meeting your business's unique needs with tailor-made solutions.” Source: RevenueBase Database · checked Sep 30, 2026
11	Actica Consulting	Partial evidence	Guildford, United KingdomHQ checked Sep 30, 2026	201-500	224 contacts →
	Partial evidence “Actica Consulting is a business and technology consultancy specialising in the delivery of complex transformation.” Source: RevenueBase Database · checked Sep 30, 2026
12	Waterstons	Partial evidence	Durham, United KingdomHQ checked Sep 30, 2026	201-500	215 contacts →
	Partial evidence “We are an IT business with a difference.” Source: RevenueBase Database · checked Sep 30, 2026
13	ROCK	Indirect evidence	Pencoed, United KingdomHQ checked Sep 30, 2026	51-200	211 contacts →
	Indirect evidence “Technology services for the future.” Source: RevenueBase Database · checked Sep 30, 2026
14	Cisilion	Indirect evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
15	Triad Group PLC	Indirect evidence	Godalming, United KingdomHQ checked Sep 30, 2026	51-200	189 contacts →
	Indirect evidence “Triad defines, designs and delivers digital solutions, working alongside customers to understand their businesses and technology challenges.” Source: RevenueBase Database · checked Sep 30, 2026
16	Azurian	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	178 contacts →
	Indirect evidence “The future has never moved this fast.” Source: RevenueBase Database · checked Sep 30, 2026
17	BIP UK	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	5,001-10,000	167 contacts →
	Indirect evidence “BIP is the international consultancy for the 21st century with over 6,500 consultants globally daring to make a difference.” Source: RevenueBase Database · checked Sep 30, 2026
18	Interex Group	Indirect evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
19	Hightekers	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	143 contacts →
	Partial evidence “Hightekers helps independent professionals globally to combine the freedom and earning potential of freelancing with the security and benefits of full-time employment.” Source: RevenueBase Database · checked Sep 30, 2026
20	Sysdoc	Indirect evidence	London (uk), United KingdomHQ checked Sep 30, 2026	51-200	142 contacts →
	Indirect evidence “At Sysdoc we exist to help our clients to transform, adapt and operate in order for them to achieve their ambitions, and to provide our own people with opportunities that allow…” Source: RevenueBase Database · checked Sep 30, 2026
21	ORG	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	139 contacts →
	Indirect evidence “We believe that change is an opportunity to thrive.” Source: RevenueBase Database · checked Sep 30, 2026
22	Cogniz Consultancy Limited	Partial evidence	Middlesex, United KingdomHQ checked Sep 30, 2026	11-50	125 contacts →
	Partial evidence “COGNIZ is an emerging IT solutions company delivering technical services, solutions and support for organisations ranging across a variety of sectors.” Source: RevenueBase Database · checked Sep 30, 2026
23	Opticoreit	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
24	Glue Reply	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
25	Oaklin	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	115 contacts →
	Indirect evidence “Oaklin is an independent management consultancy.” Source: RevenueBase Database · checked Sep 30, 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: freelancer IT 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 freelancer IT consulting firms.
Partial evidence: Its own public description names part of freelancer IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name freelancer IT 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 2,392 freelancer IT consulting firms based in the United Kingdom

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

As of Sep 30, 2026

44.9%Verified-email coverage

5.8%Mobile-number coverage

14.9Average contacts per company

1-10Median size (employees)

36.3%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,689

11-50

453

51-200

161

201-500

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 32.0d

4,5980–30

10,85131–60

48261–90

1090–180

33180+

Company record updated

Median 82.0d

00–30

4,30531–60

14,84861–90

14,02690–180

2,423180+

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 freelancer IT 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 the United Kingdom whose own description of what they do matches “freelancer IT 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 freelancer IT 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 freelancer IT consulting firms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 15,974 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 30, 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.

Freelancer IT consulting firms by metro

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 freelancer IT 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 freelancer IT consulting firms are there based in the United Kingdom?

RevenueBase identified 2,392 freelancer IT consulting firms headquartered in the 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 freelancer IT consulting firms?

London leads with 868 headquartered companies, followed by Manchester (47) and Bristol (32).

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 15,974 verified decision-maker contacts tracked across these 2,392 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 30, 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.