Company lists · Data refreshed November 2026

Top 25 Client success consulting firms based in the United Kingdom

Name: Client success 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 Nov 5, 2026 1,742 companies tracked

RevenueBase identified 1,742 company matches for client success consulting firms associated with the United Kingdom as of November 2026 and tracks 13,271 professional contacts across them, including 2,435 with verified work emails. London is the largest hub.

This list covers company matches for client success 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 November 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 Nov 5, 2026 How this list was built

1,742Companies

13,271Contacts tracked

2,435Verified emails

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The 25 largest client success consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 1,742 company matches for client success consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 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	JLT Group	Exact match	London, United KingdomHQ recorded Nov 5, 2026	n/a	1,465 contacts →
	Exact match “JLT joined Marsh McLennan in April 2019 and is now part of Marsh.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Fifty-Five	Exact match	Paris, United KingdomHQ recorded Nov 5, 2026	201-500	473 contacts →
	Exact match “fifty-five was founded in 2010 by former Google executives who understood and anticipated the potential of data in brands’ marketing strategies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Elixirr	Exact match	London, United KingdomHQ recorded Nov 5, 2026	501-1,000	308 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 · Nov 5, 2026 · View company records in RevenueBase
4	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Nov 5, 2026	201-500	253 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Mercer UK	Exact match	London, United KingdomHQ recorded Nov 5, 2026	10001+	201 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 · Nov 5, 2026 · View company records in RevenueBase
6	Clarify	Exact match	Theale, United KingdomHQ recorded Nov 5, 2026	51-200	181 contacts →
	Exact match “Clarify helps global Technology companies achieve sustained and significant commercial success.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Oxfordsm	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	94 contacts →
	Exact match “We blend capability and strategy to help client teams thrive, find and grow happier customers, and deliver profitable growth.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	NEW Link Consulting	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	80 contacts →
	Exact match “In complex transformation programmes, risk, regulation, financial crime, data, technology and operations no longer sit in separate silos.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Excalibur Communications	Exact match	Swindon, United KingdomHQ recorded Nov 5, 2026	51-200	77 contacts →
	Exact match “Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	The Foundation	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	57 contacts →
	Exact match “Since we’ve helped ambitious leaders and organisations create true customer-led success.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Passle	Exact match	Oxford, United KingdomHQ recorded Nov 5, 2026	11-50	56 contacts →
	Exact match “Build a better connected firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Collinson Grant	Exact match	Manchester, United KingdomHQ recorded Nov 5, 2026	51-200	51 contacts →
	Exact match “Collinson Grant helps clients throughout the world to improve efficiency and profitability.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Momentum	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	51 contacts →
	Exact match “MomentumABM is a growth consultancy that enables global organizations to achieve market-beating performance by winning, growing, and retaining their most valuable client…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Xlr8	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	51 contacts →
	Exact match “Consult us for.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Reckoner Audit	Exact match	Marlow, United KingdomHQ recorded Nov 5, 2026	11-50	46 contacts →
	Exact match “We are a group of experienced professionals who work towards ascending your company to new heights through consultancy and business advice.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Camelot	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	46 contacts →
	Exact match “We are a network of independent consultants who are ex-C-Suite Execs/Senior Managers who have all been there and done it in top organisations, mainly in insurance but others as…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	QA Consulting	Exact match	Berkshire, United KingdomHQ recorded Nov 5, 2026	201-500	46 contacts →
	Exact match “QA Consulting is a leading provider of consulting services to commercial, financial organisations and government departments.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Regency Grove Consultants	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	40 contacts →
	Exact match “At Regency Grove we pride ourselves on providing each client with an exceptional standard of service to suit their specific needs and requirements.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Mckinney Rogers	Exact match	Worldwide, United KingdomHQ recorded Nov 5, 2026	51-200	40 contacts →
	Exact match “Global leaders in strategy execution.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	TH NK	Exact match	London, United KingdomHQ recorded Nov 5, 2026	n/a	40 contacts →
	Exact match “You can now find us over at EPAM Continuum.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Microcomms Professional Services	Exact match	Truro, United KingdomHQ recorded Nov 5, 2026	11-50	32 contacts →
	Exact match “At Microcomms we utilise a turn-key approach to every project, as we understand that every client’s requirements will be different.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Millennium Consulting	Exact match	Hythe, United KingdomHQ recorded Nov 5, 2026	51-200	31 contacts →
	Exact match “Millennium Consulting is a UK-headquartered fintech consultancy that has delivered technology transformation solutions to its international client base since 1995.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Shipley UK	Exact match	Yeovil, United KingdomHQ recorded Nov 5, 2026	11-50	28 contacts →
	Exact match “Here at Shipley UK, we help organisations win good business in competitive, complex, and highly regulated markets.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	The Agency Blueprint	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	28 contacts →
	Exact match “I help recruiters build systemised recruitment businesses that run without burnout.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	WTS Hansuke	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	26 contacts →
	Exact match “WTS Hansuke is a specialist professional services firm notable for its focus on excellent client service and agility.” Recorded in the RevenueBase company graph · Nov 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 “client success 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 1,742 client success consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,435 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Client success consulting firms based in the United Kingdom at a glance

As of Nov 5, 2026

18.3%Verified-email coverage

7.6Average contacts per company

1-10Median size (employees)

37.8%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

1,406

11-50

193

51-200

201-500

501-1,000

1,001-5,000

10001+

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 1,742 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 “client success 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 2,435 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 November 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.

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

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

RevenueBase identified 1,742 company matches for client success consulting firms associated with the United Kingdom as of November 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?

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

Which city has the most client success consulting firms?

London leads with 659 company records, followed by Manchester (45) and Bristol (23).

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 2,435 professional contacts with verified work emails tracked across these 1,742 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 November 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.