Company lists · Data refreshed September 2026

Top 25 Thought leadership consulting firms based in the United Kingdom

RevenueBase identified 1,589 company matches for thought leadership consulting firms associated with the United Kingdom as of September 2026 and tracks 11,992 professional contacts across them, including 4,249 with verified work emails. London is the largest hub.

This list covers company matches for thought leadership 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 29, 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 29, 2026 How this list was built
1,589Companies
11,992Contacts tracked
4,249Verified emails
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The 25 largest thought leadership consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 1,589 company matches for thought leadership consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchLondon, United KingdomHQ recorded Sep 29, 2026501-1,000450 contacts →

Exact match

“TRANSEARCH International is a global executive search and leadership consulting organisation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchAldgate, United KingdomHQ recorded Sep 29, 2026201-500415 contacts →

Exact match

“Emperor is one of the UK's leading employee-owned creative communications agencies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchUk, United KingdomHQ recorded Sep 29, 2026n/a320 contacts →

Exact match

“In 2018 PGC rebranded as Friisberg & Partners International +44 207 062 3603”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500244 contacts →

Exact match

“Sheffield Haworth is a global consultancy founded in 1993.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500227 contacts →

Exact match

“YSC Consulting, now part of Accenture, is a leadership strategy consultancy.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchCity Of London, United KingdomHQ recorded Sep 29, 202651-200205 contacts →

Exact match

“We are a communications consultancy powered by collaboration.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchLeeds, United KingdomHQ recorded Sep 29, 202651-200202 contacts →

Exact match

“GatenbySanderson is the UK's leading people intelligence advisory business.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200187 contacts →

Exact match

“Green Park is a specialist executive search and advisory firm trusted by organisations seeking stronger, more future-ready leadership.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500177 contacts →

Exact match

“Hanover is an award-winning communications consultancy that advises enterprises, institutions, and individuals on rewiring their strategies for long-term success.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchOxford, United KingdomHQ recorded Sep 29, 2026201-500145 contacts →

Exact match

“The future of your organisation is shaped by the leaders you develop today.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500130 contacts →

Exact match

“Instinctif UK has officially rebranded to TEAM LEWIS.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200125 contacts →

Exact match

“Hanbury is a strategic advisory firm that turns insight into impact.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200111 contacts →

Exact match

“Camargue is an award-winning, employee-owned communications agency.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20080 contacts →

Exact match

“Peridot Partners exists to deliver better leadership to accelerate societal change.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20075 contacts →

Exact match

“We redefined management consulting to make it better for clients and better for consultants.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchOxford, United KingdomHQ recorded Sep 29, 202651-20074 contacts →

Exact match

“Oxford HR is a global leadership consultancy, supporting organisations across the world to find and support exceptional leaders and teams.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchBirmingham, United KingdomHQ recorded Sep 29, 202651-20073 contacts →

Exact match

“We blend sharp strategy with compelling corporate storytelling to help you show up with clarity, confidence, and purpose.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5072 contacts →

Exact match

“In a world of constant transformation, leadership capability is one of the biggest determinants of whether strategy succeeds or stalls.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5071 contacts →

Exact match

“Calibre One works with the builders of great companies– from iconic giants to VC and PE backed market pioneers – helping them to create diverse and high-performing leadership…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchGuisborough, United KingdomHQ recorded Sep 29, 202611-5066 contacts →

Exact match

“DTW is a strategic communications and marketing consultancy We specialise in work for membership organisations, regulatory bodies and major infrastructure and energy projects…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20058 contacts →

Exact match

“Savannah Group is a next generation executive search and leadership consulting firm.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5057 contacts →

Exact match

“Tavistock is a leading strategic communications consultancy specialising in the corporate, financial and reputation management sectors.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5055 contacts →

Exact match

“For more than four decades, we have helped our clients build, protect, and enhance their reputations, advance their business objectives, and shape the conversations that matter…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5052 contacts →

Exact match

“FT Longitude creates real thought leadership, for brands and marketers with big ideas.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20051 contacts →

Exact match

“H/Advisors in the UK brings together the heritage, skills and insight of H/Advisors Maitland and H/Advisors Cicero to support leaders at their most important moments.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,589 thought leadership consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,249 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Thought leadership consulting firms based in the United Kingdom at a glance

As of Sep 29, 2026
35.4%Verified-email coverage
7.5Average contacts per company
1-10Median size (employees)
47.4%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
1,307
11-50
220
51-200
41
201-500
13
501-1,000
3
1,001-5,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,589 companies.

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 “thought leadership 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 4,249 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 29, 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.

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

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

RevenueBase identified 1,589 company matches for thought leadership 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?

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

Which city has the most thought leadership consulting firms?

London leads with 753 company records, followed by Manchester (21) and Edinburgh (19).

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 4,249 professional contacts with verified work emails tracked across these 1,589 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 29, 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.