Company lists · Data refreshed September 2026

Top 25 Organizational development consulting firms based in the United Kingdom

Name: Organizational development 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 5, 2026 10,972 companies tracked

RevenueBase identified 10,972 company matches for organizational development consulting firms associated with the United Kingdom as of September 2026 and tracks 66,701 professional contacts across them, including 23,205 with verified work emails and 5,900 with mobile numbers. London is the largest hub.

This list covers company matches for organizational development 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 5, 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 5, 2026 How this list was built

10,972Companies

66,701Contacts tracked

23,205Verified emails

5,900Mobile numbers

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The 25 largest organizational development consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 10,972 company matches for organizational development consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 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	Baringa	Exact match	London, United KingdomHQ recorded Sep 5, 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 5, 2026 · View company records in RevenueBase
2	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 5, 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 5, 2026 · View company records in RevenueBase
3	Insights	Exact match	Dundee, United KingdomHQ recorded Sep 5, 2026	501-1,000	897 contacts →
	Exact match “We're a people development company, built to create a world where people truly understand themselves and others, and are inspired to make a positive difference in everything they…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4	Pegasus Group	Exact match	Lichfield, United KingdomHQ recorded Sep 5, 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 5, 2026 · View company records in RevenueBase
5	Mindgym	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	450 contacts →
	Exact match “We’re MindGym.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6	Scott Logic	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Sep 5, 2026	201-500	383 contacts →
	Exact match “At Scott Logic, we design and build software that transforms the performance of some of the world’s biggest and most demanding organisations.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7	Gcps Consulting	Exact match	Sheffield, United KingdomHQ recorded Sep 5, 2026	n/a	377 contacts →
	Exact match “GCPS is a UK-based international consulting firm with a network of highly experienced consultants supporting clients to prevent and respond to staff misconduct (e.g.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8	Grayce	Exact match	Manchester, United KingdomHQ recorded Sep 5, 2026	501-1,000	376 contacts →
	Exact match “Grayce partners with some of the world’s most ambitious organisations to help deliver change and transformation.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9	Emergn	Exact match	London, United KingdomHQ recorded Sep 5, 2026	501-1,000	351 contacts →
	Exact match “Emergn is a global technology and management consultancy built on a simple conviction: the only sustainable competitive advantage is the way you work.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10	Q5	Exact match	London, United KingdomHQ recorded Sep 5, 2026	501-1,000	344 contacts →
	Exact match “Q5 is a global, award-winning management consultancy focused on building healthy, high-performing organisations.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11	Mercer UK	Exact match	London, United KingdomHQ recorded Sep 5, 2026	10001+	329 contacts →
	Exact match “At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12	PGC	Exact match	Uk, United KingdomHQ recorded Sep 5, 2026	n/a	320 contacts →
	Exact match “In 2018 PGC rebranded as Friisberg & Partners International +44 207 062 3603” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13	Pareto	Exact match	Wilmslow, United KingdomHQ recorded Sep 5, 2026	201-500	297 contacts →
	Exact match “Pareto partner globally with organisations to take people from learning to leading.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14	Elixirr	Exact match	London, United KingdomHQ recorded Sep 5, 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 5, 2026 · View company records in RevenueBase
15	Elevate Talent	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	250 contacts →
	Exact match “Elevate Talent supports ambitious companies in optimizing organizational performance and sourcing exceptional leaders from across sports, entertainment, media, lifestyle…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	247 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17	Sheffield Haworth	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	244 contacts →
	Exact match “Sheffield Haworth is a global consultancy founded in 1993.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18	Albany Beck	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	240 contacts →
	Exact match “Albany Beck is a client-first consulting firm helping financial services organisations deliver complex change and build capability, not dependency.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19	YSC Consulting, Part Of Accenture	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	227 contacts →
	Exact match “YSC Consulting, now part of Accenture, is a leadership strategy consultancy.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20	Protiviti UK	Exact match	London, United KingdomHQ recorded Sep 5, 2026	201-500	206 contacts →
	Exact match “Welcome to the Protiviti perspective.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21	Gatenbysanderson	Exact match	Leeds, United KingdomHQ recorded Sep 5, 2026	51-200	202 contacts →
	Exact match “GatenbySanderson is the UK's leading people intelligence advisory business.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22	OIM	Exact match	Bath, United KingdomHQ recorded Sep 5, 2026	n/a	198 contacts →
	Exact match “OIM is dedicated to building competitive organisations.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23	TSK Group	Exact match	London And Manchester, United KingdomHQ recorded Sep 5, 2026	51-200	192 contacts →
	Exact match “We are workplace transformation partners, achieving extraordinary outcomes for people, place and planet.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24	Clarify	Exact match	Theale, United KingdomHQ recorded Sep 5, 2026	51-200	191 contacts →
	Exact match “Clarify helps global Technology companies achieve sustained and significant commercial success.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25	Green Park	Exact match	London, United KingdomHQ recorded Sep 5, 2026	51-200	187 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 5, 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 “organizational development 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 25 of 10,972 organizational development consulting firms based in the United Kingdom

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Organizational development consulting firms based in the United Kingdom at a glance

As of Sep 5, 2026

34.8%Verified-email coverage

8.8%Mobile-number coverage

6.1Average contacts per company

1-10Median size (employees)

36.2%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

9,297

11-50

1,303

51-200

231

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

21,6150–30

1,39531–60

761–90

690–180

182180+

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 “organizational development 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 23,205 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 5, 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.

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

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

RevenueBase identified 10,972 company matches for organizational development 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?

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

Which city has the most organizational development consulting firms?

London leads with 3969 company records, followed by Manchester (234) and Bristol (168).

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 23,205 professional contacts with verified work emails tracked across these 10,972 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 5, 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.