Company lists · Data refreshed September 2026

Top 25 Consultancy companies based in the United Kingdom

Name: Consultancy companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 21,348 companies tracked

RevenueBase identified 21,348 company matches for consultancy companies associated with the United Kingdom as of September 2026 and tracks 170,112 professional contacts across them, including 65,278 with verified work emails and 13,227 with mobile numbers. London is the largest hub.

This list covers company matches for consultancy companies 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 24, 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 24, 2026 How this list was built

21,348Companies

170,112Contacts tracked

65,278Verified emails

13,227Mobile numbers

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

The 25 largest consultancy companies based in the United Kingdom

Ranked by team size

Top 25 of 21,348 company matches for consultancy companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 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	MACE	Exact match	London, United KingdomHQ recorded Sep 24, 2026	5,001-10,000	8,458 contacts →
	Exact match “Mace Consult launched as a new and independent business on 5 March 2026, through a carve-out from Mace Group.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Buro Happold	Exact match	Bath, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	3,336 contacts →
	Exact match “We are an international, integrated consultancy of engineers, designers and advisers.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Baringa	Exact match	London, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	2,179 contacts →
	Exact match “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Antal International	Exact match	London, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	1,979 contacts →
	Exact match “Antal International is a global executive search organisation with over 130 offices in more than 30 countries.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Barnett Waddingham	Exact match	London, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	1,331 contacts →
	Exact match “We are a leading UK professional services consultancy at the forefront of risk, pensions, investment and insurance.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Blackmont Consulting	Exact match	London, United KingdomHQ recorded Sep 24, 2026	201-500	1,221 contacts →
	Exact match “Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 24, 2026	501-1,000	1,011 contacts →
	Exact match “At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Oliver James	Exact match	Manchester, United KingdomHQ recorded Sep 24, 2026	501-1,000	870 contacts →
	Exact match “At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	Pick Everard	Exact match	Leicester, United KingdomHQ recorded Sep 24, 2026	501-1,000	795 contacts →
	Exact match “Pick Everard is a leading multi-professional consultancy working within the property, infrastructure and construction industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	PKF Littlejohn	Exact match	London, United KingdomHQ recorded Sep 24, 2026	501-1,000	702 contacts →
	Exact match “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Setfords	Exact match	Surrey, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	661 contacts →
	Exact match “Setfords is the fastest-growing UK Top 100 law firm.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	KBR Granherne	Exact match	Leatherhead, United KingdomHQ recorded Sep 24, 2026	501-1,000	648 contacts →
	Exact match “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	Tony GEE And Partners	Exact match	Esher, United KingdomHQ recorded Sep 24, 2026	501-1,000	606 contacts →
	Exact match “Tony Gee is an award winning firm that provides specialist engineering consultancy services to the construction industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Dalcour Maclaren	Exact match	Chesterton, United KingdomHQ recorded Sep 24, 2026	501-1,000	589 contacts →
	Exact match “Dalcour Maclaren: delivering land, stakeholder and environmental solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Pegasus Group	Exact match	Lichfield, United KingdomHQ recorded Sep 24, 2026	201-500	580 contacts →
	Exact match “Since 2003, we’ve been solving planning and development problems for our clients successfully.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Waterman Group	Exact match	London, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	563 contacts →
	Exact match “Waterman Group is a multidisciplinary consultancy providing sustainable solutions to meet the planning, engineering design and project delivery needs of the property…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	Alten LTD - UK	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
18	Strategy Insights	Exact match	London, United KingdomHQ recorded Sep 24, 2026	51-200	528 contacts →
	Exact match “Strategy Insights is a specialist business and economic development consultancy.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	STEER	Exact match	London, United KingdomHQ recorded Sep 24, 2026	201-500	524 contacts →
	Exact match “Complex challenges.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Broadstone	Exact match	London, United KingdomHQ recorded Sep 24, 2026	501-1,000	497 contacts →
	Exact match “Broadstone is a leading, independent UK consultancy delivering expert advice to employers, insurers, pension scheme trustees and lenders.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	Aspens Services LTD	Exact match	London, United KingdomHQ recorded Sep 24, 2026	5,001-10,000	497 contacts →
	Exact match “We are a catering company who specialise in the education sector.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Analysys Mason	Exact match	London, United KingdomHQ recorded Sep 24, 2026	201-500	459 contacts →
	Exact match “Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	Fairhurst	Exact match	Glasgow, United KingdomHQ recorded Sep 24, 2026	201-500	437 contacts →
	Exact match “Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	GRS	Exact match	London, United KingdomHQ recorded Sep 24, 2026	51-200	425 contacts →
	Exact match “The GRS Group is an international executive search consultancy whose services include retained search, contingency search, advertised selection and interim solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Fichtner Consulting Engineers LTD	Exact match	Stockport, United KingdomHQ recorded Sep 24, 2026	51-200	418 contacts →
	Exact match “Fichtner is one of the world's leading independent engineering consultancy firms.” Recorded in the RevenueBase company graph · Sep 24, 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 “consultancy 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 25 of 21,348 consultancy companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 65,278 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Consultancy companies based in the United Kingdom at a glance

As of Sep 24, 2026

38.4%Verified-email coverage

7.8%Mobile-number coverage

8.0Average contacts per company

1-10Median size (employees)

30.2%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

16,147

11-50

3,124

51-200

657

201-500

104

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 26.0d

44,5550–30

12,98831–60

80561–90

5290–180

177180+

Company record updated

Median 87.0d

00–30

17,86831–60

74,45061–90

52,11390–180

9,117180+

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 “consultancy 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 65,278 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 24, 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.

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

How many consultancy companies are there based in the United Kingdom?

RevenueBase identified 21,348 company matches for consultancy companies 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?

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

Which city has the most consultancy companies?

London leads with 6437 company records, followed by Manchester (502) and Bristol (278).

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 65,278 professional contacts with verified work emails tracked across these 21,348 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 21,348 consultancy companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Consultancy companies 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.