Company lists · Data refreshed September 2026

Top 24 Business IT consulting firms based in the United Kingdom

Name: Business 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 23, 2026 5,004 companies tracked

RevenueBase identified 5,004 company matches for business IT consulting firms associated with the United Kingdom as of September 2026 and tracks 49,468 professional contacts across them, including 14,697 with verified work emails and 2,955 with mobile numbers. London is the largest hub.

This list covers company matches for business IT consulting firms associated with the 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 23, 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 23, 2026 How this list was built

5,004Companies

49,468Contacts tracked

14,697Verified emails

2,955Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 24 largest business IT consulting firms based in the United Kingdom

Ranked by team size

Top 24 of 5,004 company matches for business IT consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 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	Noventiq	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
2	MTI	Exact match	Staines-upon-thames, United KingdomHQ recorded Sep 23, 2026	201-500	764 contacts →
	Exact match “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	TSG	Exact match	Gateshead, United KingdomHQ recorded Sep 23, 2026	201-500	748 contacts →
	Exact match “TSG: The Technology Partner for Ambitious Businesses We're not a reseller.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Dimension Data UKI	Exact match	Fleet, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	540 contacts →
	Exact match “Dimension Data uses the power of technology to help organisations achieve great things.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	XMA	Exact match	Reading, United KingdomHQ recorded Sep 23, 2026	501-1,000	538 contacts →
	Exact match “Unlock your potential with XMA.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	ACORA	Exact match	Burgess Hill, United KingdomHQ recorded Sep 23, 2026	501-1,000	423 contacts →
	Exact match “We’ve been on a mission to bring together people and technology since the day we were founded over 25 years ago.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	Trustmarque	Exact match	York, United KingdomHQ recorded Sep 23, 2026	501-1,000	421 contacts →
	Exact match “Trustmarque delivers the value of technology to bring real-life impact.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Zenzero	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
9	FSP	Exact match	Reading, United KingdomHQ recorded Sep 23, 2026	201-500	366 contacts →
	Exact match “FSP is a leading consultancy specialising in Data and AI, Cyber Security, Enterprise Cloud and Change Delivery, providing advisory led enterprise transformation delivered through…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Reliance Infosystems	Exact match	West End, United KingdomHQ recorded Sep 23, 2026	201-500	326 contacts →
	Exact match “As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Purview	Exact match	Edinburgh, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	323 contacts →
	Exact match “Purview is a premier provider of IT Engineering and Talent Solutions to mid-market and Fortune 500 companies globally.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Cartesian	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	302 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	BOXXE	Exact match	Hemel Hempstead, United KingdomHQ recorded Sep 23, 2026	201-500	295 contacts →
	Exact match “boxxe is a leading provider of hardware, software, and managed IT services for public and private sector organisations.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	KOCHO	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	295 contacts →
	Exact match “At Kocho, we believe greatness lies in everyone.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Elixirr	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	275 contacts →
	Exact match “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Aspire Technology Solutions	Exact match	Gateshead, United KingdomHQ recorded Sep 23, 2026	201-500	266 contacts →
	Exact match “Welcome to Aspire Technology Solutions!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Xalient	Exact match	Leeds, United KingdomHQ recorded Sep 23, 2026	201-500	260 contacts →
	Exact match “We are a global boutique, specializing exclusively in the convergence of identity-driven security and networking.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Flat Rock Technology	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	231 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Actica Consulting	Exact match	Guildford, United KingdomHQ recorded Sep 23, 2026	201-500	224 contacts →
	Exact match “Actica Consulting is a business and technology consultancy specialising in the delivery of complex transformation.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Waterstons	Exact match	Durham, United KingdomHQ recorded Sep 23, 2026	201-500	215 contacts →
	Exact match “We are an IT business with a difference.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	ROCK	Exact match	Pencoed, United KingdomHQ recorded Sep 23, 2026	51-200	211 contacts →
	Exact match “Technology services for the future.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Capita IT Professional Services	Exact match	Haywards Heath, United KingdomHQ recorded Sep 23, 2026	10001+	208 contacts →
	Exact match “Our IT professional services deliver expertise in effective business change, facilitated by technology.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Xperience	Exact match	Lisburn, United KingdomHQ recorded Sep 23, 2026	51-200	205 contacts →
	Exact match “Unlock the full potential of your business with digital solutions built for you and with you.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Genese Solution	Exact match	Plymouth, United KingdomHQ recorded Sep 23, 2026	51-200	199 contacts →
	Exact match “Genese Solution is a technology service company leading digital transformation with roots in Cloud Computing, Cloud Native Software Development & Cloud Security.” Recorded in the RevenueBase company graph · Sep 23, 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 “business IT consulting firms”. 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 5,004 business IT consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 14,697 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

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

As of Sep 23, 2026

29.7%Verified-email coverage

6.0%Mobile-number coverage

9.9Average contacts per company

1-10Median size (employees)

33.5%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

3,676

11-50

948

51-200

235

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 25.0d

11,1660–30

3,27531–60

18761–90

1490–180

55180+

Company record updated

Median 88.0d

00–30

5,28831–60

25,07761–90

16,37690–180

2,727180+

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 the United Kingdom whose business descriptions match “business IT consulting firms” 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 14,697 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 23, 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.

Business IT consulting firms by metro

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 “business IT consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 5,004 company matches for business IT consulting firms associated with the 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?

Noventiq tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most business IT consulting firms?

London leads with 1675 company records, followed by Manchester (113) and Birmingham (64).

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 14,697 professional contacts with verified work emails tracked across these 5,004 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 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,004 business IT consulting firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Business IT consulting firms by geography

Browse the directory

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.