Company lists · Data refreshed September 2026

Top 10 IT consulting firms based in the United Kingdom

RevenueBase identified 7,180 company matches for IT consulting firms associated with the United Kingdom as of September 2026 and tracks 343,168 professional contacts across them, including 83,116 with verified work emails and 24,334 with mobile numbers. London is the largest hub.

This list covers company matches for 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 4, 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 4, 2026 How this list was built
7,180Companies
343,168Contacts tracked
83,116Verified emails
24,334Mobile numbers
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The 10 largest IT consulting firms based in the United Kingdom

Ranked by team size
Top 10 of 7,180 company matches for IT consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMarlow, United KingdomHQ recorded Sep 4, 20261,001-5,0002,873 contacts →

Exact match

“Softcat is a leading provider of IT infrastructure to corporate and public sectors.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2Exact matchLeeds, United KingdomHQ recorded Sep 4, 20261,001-5,0001,076 contacts →

Exact match

“BJSS is an award-winning technology and engineering consultancy for business.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3Exact matchNewry, United KingdomHQ recorded Sep 4, 20261,001-5,0001,022 contacts →

Exact match

“First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4Exact matchLeicester, United KingdomHQ recorded Sep 4, 20261,001-5,000942 contacts →

Exact match

“Mindera is a global consulting and engineering company with 1100+ people, delivering technology solutions across 9 locations, from Brazil to Australia.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 4, 20261,001-5,000905 contacts →

Exact match

“We empower people to create sustainable value with the clever use of technology.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6Exact matchWakefield, United KingdomHQ recorded Sep 4, 20261,001-5,000841 contacts →

Exact match

“Complexity isn’t the enemy.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7Exact matchLeatherhead, United KingdomHQ recorded Sep 4, 2026501-1,000784 contacts →

Exact match

“Bytes is a leading provider of world-class IT solutions.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 4, 2026201-500743 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 4, 2026 · View company records in RevenueBase
9Exact matchDerby, United KingdomHQ recorded Sep 4, 20261,001-5,000624 contacts →

Exact match

“Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10Exact matchReading, United KingdomHQ recorded Sep 4, 2026501-1,000585 contacts →

Exact match

“Unlock your potential with XMA.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

Showing 10 of 7,180 IT consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 83,116 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT consulting firms based in the United Kingdom at a glance

As of Sep 4, 2026
24.2%Verified-email coverage
7.1%Mobile-number coverage
47.8Average contacts per company
1-10Median size (employees)
35.3%Largest-city concentration · London
Sep 4, 2026Page data refreshed

Companies by employee count

1-10
4,568
11-50
1,650
51-200
521
201-500
128
501-1,000
34
1,001-5,000
45
5,001-10,000
10
10001+
16

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 “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 83,116 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 4, 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.

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

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

RevenueBase identified 7,180 company matches for 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?

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

Which city has the most IT consulting firms?

London leads with 2534 company records, followed by Manchester (178) and Birmingham (119).

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 83,116 professional contacts with verified work emails tracked across these 7,180 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 4, 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.