Company lists · Data refreshed September 2026

Top 25 Impact measurement and management consultants based in London, United Kingdom

RevenueBase identified 390 company matches for impact measurement and management consultants associated with London, United Kingdom as of September 2026 and tracks 2,353 professional contacts across them, including 973 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for impact measurement and management consultants associated with London, 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 28, 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 28, 2026 How this list was built
390Companies
2,353Contacts tracked
973Verified emails
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The 25 largest impact measurement and management consultants based in London, United Kingdom

Ranked by team size
Top 25 of 390 company matches for impact measurement and management consultants based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 28, 202651-200158 contacts →

Exact match

“Integrity sets the international standard for ethically delivered, expert services.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5087 contacts →

Exact match

“Complex transformation, expertly navigated.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5086 contacts →

Exact match

“From employability and strategy formulation through to training programme design and delivery, we have been the engine behind award-winning and high-impact workplace initiatives…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20068 contacts →

Exact match

“ThirdWay Partners operates as an impact investment and advisory firm focused on creating inclusive sustainable development and impact.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5059 contacts →

Exact match

“An award-winning management consultancy who deliver tangible and enduring results for our clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20058 contacts →

Exact match

“Eastside People is a community of experienced professionals focused on helping charity, not-for-profit and social enterprise leaders to build the capacity and impact of their…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5048 contacts →

Exact match

“Bridges Outcomes Partnerships is a not-for-profit social enterprise.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5045 contacts →

Exact match

“Circle are Carbon, Project, Cost and Quality experts.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 28, 2026n/a41 contacts →

Exact match

“You can now find us over at EPAM Continuum.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5039 contacts →

Exact match

“We are here to drive three significant changes: CHANGE CORPORATE IMPACT: help business to reframe and re-orient its role in society CHANGE CONSUMPTION: help brands re-wire for the…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5031 contacts →

Exact match

“From consultancy to collaborative field-building, The Good Economy (TGE) is a recognised thought leader and the ‘go to’ firm for organisations looking to deliver and report on…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5028 contacts →

Exact match

“Kaleidoscope is an award-winning social enterprise consultancy.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5028 contacts →

Exact match

“Singlify is a new social enterprise born out of the belief that technology will play a critical role in increasing the impact of social sector organisations on society.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5027 contacts →

Exact match

“Scriptoria is an award-winning sustainable development consultancy delivering effective solutions for international development and research programmes through four core teams…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5027 contacts →

Exact match

“SB+CO is a sustainability consultancy that advises companies on strategy, sustainability activation and integration, ESG, stakeholder engagement and communications – and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5027 contacts →

Exact match

“The Social Investment Consultancy (TSIC) is a global organisation with a network of experts committed to creating social change.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5027 contacts →

Exact match

“MH & A was founded in 2018 by Professor Matt Hamnett, who has worked at senior levels in central Government, corporate and social sector organisations.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5025 contacts →

Exact match

“Positive Luxury are the sustainability experts and growth partners for the luxury industry, working with global brands to turn sustainability into a competitive advantage.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20025 contacts →

Exact match

“CARLTON is a differentiated, client-focused, management consultancy providing professional services to help clients enhance their business performance and shareholder value.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5024 contacts →

Exact match

“We are trusted experts in carbon measurement and reduction, specialising in packaging and print manufacturing, media and logistics sectors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5022 contacts →

Exact match

“It’s never been more important for organisations to explore, align, amplify and communicate the positive impact you’re having.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-1020 contacts →

Exact match

“Cause4 is a social business founded to support charities to achieve more and become better.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-1018 contacts →

Exact match

“We’re a purpose-driven consultancy that transforms how people lead, learn, collaborate and operate- strengthening their capacity to build a more just and regenerative world.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-1017 contacts →

Exact match

“Creative business solutions to power positive social impact.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“Firetail is a strategy consultancy working to achieve social progress.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 390 impact measurement and management consultants based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 973 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Impact measurement and management consultants based in London, United Kingdom at a glance

As of Sep 28, 2026
41.4%Verified-email coverage
6.0Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
281
11-50
90
51-200
16
10001+
1

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 390 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 London, United Kingdom whose business descriptions match “impact measurement and management consultants” 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 973 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 28, 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.

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 “impact measurement and management consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many impact measurement and management consultants are there based in London, United Kingdom?

RevenueBase identified 390 company matches for impact measurement and management consultants associated with London, 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?

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

Which city in the United Kingdom has the most impact measurement and management consultants?

London leads the United Kingdom with 390 company records, followed by Bristol (22) and Manchester (20).

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 973 professional contacts with verified work emails tracked across these 390 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 28, 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.