Company lists · Data refreshed September 2026

Top 25 Business improvement consulting firms based in the United Kingdom

Name: Business improvement 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 23, 2026 5,048 companies tracked

RevenueBase identified 5,048 company matches for business improvement consulting firms associated with the United Kingdom as of September 2026 and tracks 25,875 professional contacts across them, including 6,284 with verified work emails and 1,868 with mobile numbers. London is the largest hub.

This list covers company matches for business improvement 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 23, 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 23, 2026 How this list was built

5,048Companies

25,875Contacts tracked

6,284Verified emails

1,868Mobile numbers

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The 25 largest business improvement consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 5,048 company matches for business improvement consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 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	Elixirr	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
2	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	247 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Percipere	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	245 contacts →
	Exact match “Percipere is a niche global consultancy, partnering companies in their evolution towards greater operational efficiency and profitability.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Albany Beck	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
5	OIM	Exact match	Bath, United KingdomHQ recorded Sep 23, 2026	n/a	198 contacts →
	Exact match “OIM is dedicated to building competitive organisations.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	Clarify	Exact match	Theale, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
7	Clarasys	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	170 contacts →
	Exact match “We are an employee-owned, award-winning international consulting firm that believes there’s a better way to do consultancy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	CVL	Exact match	London, United KingdomHQ recorded Sep 23, 2026	n/a	165 contacts →
	Exact match “Strategic development for already dynamic businesses, successful mergers & acquisitions between household names, technology planning in cutting edge industries and real-world…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Sysdoc	Exact match	London (uk), United KingdomHQ recorded Sep 23, 2026	51-200	142 contacts →
	Exact match “At Sysdoc we exist to help our clients to transform, adapt and operate in order for them to achieve their ambitions, and to provide our own people with opportunities that allow…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	ORG	Exact match	London, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	139 contacts →
	Exact match “We believe that change is an opportunity to thrive.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Squarcle	Exact match	Bristol, United KingdomHQ recorded Sep 23, 2026	51-200	129 contacts →
	Exact match “Squarcle is a procurement, supply chain and digital specialist which sits at the centre of transformation, with a skillset which has proven relevance in any market characterised…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Athens	Exact match	London, United KingdomHQ recorded Sep 23, 2026	11-50	122 contacts →
	Exact match “Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Chartwell	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	117 contacts →
	Exact match “Chartwell is a global operations consultancy with offices in London, Boston and Hamburg.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Oaklin	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	115 contacts →
	Exact match “Oaklin is an independent management consultancy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Humanhire Corp	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	104 contacts →
	Exact match “HumanHire Corp established in 2014 focuses to provide the most reliable and relevant resources based on client needs.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	PHMC	Exact match	Buxton, United KingdomHQ recorded Sep 23, 2026	n/a	98 contacts →
	Exact match “Freelance management consultancy, support business owners and their management teams.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Valentia Partners	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	94 contacts →
	Exact match “Valentia Partners is a specialist Management Consulting firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	BDO Northern Ireland	Exact match	Belfast, United KingdomHQ recorded Sep 23, 2026	51-200	93 contacts →
	Exact match “BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Whitetree	Exact match	Bristol, United KingdomHQ recorded Sep 23, 2026	51-200	89 contacts →
	Exact match “Whitetree is an agile consulting firm that provides strategic guidance and operational support to large businesses and government departments.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Growth HUB	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	85 contacts →
	Exact match “Growth Hub embeds operational teams inside professional services firms.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Proservartner	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	84 contacts →
	Exact match “Proservartner is an international consulting firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Simpler Consulting, An IBM Company	Exact match	London, United KingdomHQ recorded Sep 23, 2026	n/a	84 contacts →
	Exact match “With Simpler as your lean-transformation partner, you can achieve long-term success.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Cambridge Management Consulting	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	82 contacts →
	Exact match “Cambridge Management Consulting (Cambridge MC) is an international consulting firm that helps companies of all sizes have a better impact on the world.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	PEN	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	76 contacts →
	Exact match “We’re a specialist, management consultancy, focusing on; Customer Experience, Operational Excellence and Change Delivery, dedicated to helping our clients create real, positive…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Eden Mccallum	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	75 contacts →
	Exact match “We redefined management consulting to make it better for clients and better for consultants.” Recorded in the RevenueBase company graph · Sep 23, 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 “business improvement 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 5,048 business improvement consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 6,284 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business improvement consulting firms based in the United Kingdom at a glance

As of Sep 23, 2026

24.3%Verified-email coverage

7.2%Mobile-number coverage

5.1Average contacts per company

1-10Median size (employees)

32.1%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

4,310

11-50

544

51-200

122

201-500

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 25.0d

4,7800–30

1,39131–60

9261–90

490–180

17180+

Company record updated

Median 86.0d

00–30

3,86331–60

11,89461–90

8,74990–180

1,369180+

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 “business improvement 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 6,284 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 23, 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.

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

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

RevenueBase identified 5,048 company matches for business improvement 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?

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

Which city has the most business improvement consulting firms?

London leads with 1621 company records, followed by Manchester (104) and Birmingham (60).

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 6,284 professional contacts with verified work emails tracked across these 5,048 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 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,048 business improvement consulting firms based in the United Kingdom. Start with a free account, no credit card.

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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.