Company lists · Data refreshed September 2026

Top 25 Impact measurement firms based in the United Kingdom

RevenueBase identified 104 company matches for impact measurement firms associated with the United Kingdom as of September 2026 and tracks 574 professional contacts across them, including 266 with verified work emails. London is the largest hub.

This list covers company matches for impact measurement 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 20, 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 20, 2026 How this list was built
104Companies
574Contacts tracked
266Verified emails
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The 25 largest impact measurement firms based in the United Kingdom

Ranked by team size
Top 25 of 104 company matches for impact measurement firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchManchester, United KingdomHQ recorded Sep 20, 202611-5040 contacts →

Exact match

“PURPOSE-DRIVEN RESEARCH & ADVICE SERVICES We are a social enterprise, committed to generating social value impacts and helping our clients have a more positive impact on place…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchManchester, United KingdomHQ recorded Sep 20, 202611-5034 contacts →

Exact match

“Founded in Manchester, 2005.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
5Exact matchLancaster, United KingdomHQ recorded Sep 20, 202611-5018 contacts →

Exact match

“We help organisations understand their true impact on people and planet and inspire them to think and act differently to become truly sustainable.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchBucks, United KingdomHQ recorded Sep 20, 20261-1016 contacts →

Exact match

“Retail Alchemy is a unique marketing effectiveness consultancy specialising in the measurement of return on investment for Shopper Marketing, Field Sales, ATL, Digital and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchManchester, United KingdomHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“Change just got real.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchHull, United KingdomHQ recorded Sep 20, 20261-1012 contacts →

Exact match

“Social value is too important to be inaccurate.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Whether you’re determining how to drive additional benefits, the best option for your investment, or how to maximise savings, it is imperative to understand and articulate the…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchCity Of London, United KingdomHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Welcome to RG Sciences, your premier destination for advanced data & analytics solutions in the impact investing space.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-1012 contacts →

Exact match

“Rigorous.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-1012 contacts →

Exact match

“ImpactLoop LTD is a UK-based boutique consultancy that bridges research and practice to ensure policies, programmes, and projects are grounded in evidence and contribute to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchEdinburgh, United KingdomHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“At ERI, we work with investors, philanthropists, and public sector organizations to help them maximize their impact.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchBourne End, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“hivve (formally Vertigo Ventures - VV) empowers organisations and individuals around the world to understand, capture and demonstrate the impact of their research.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-109 contacts →

Exact match

“We’re a research and strategic consultancy with specialisms in mergers and acquisitions, and the design and reform of impact-based organisations and interventions Traditional…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchWarlingham, United KingdomHQ recorded Sep 20, 20261-108 contacts →

Exact match

“Eido Research was founded by Samuel and Ben on a shared passion and a shared frustration.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-108 contacts →

Exact match

“We help you establish a complete view of all marketing impact, not just what’s easiest to measure.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchUk, United KingdomHQ recorded Sep 20, 20261-107 contacts →

Exact match

“We strengthen our partners' skills and capabilities to make a greater difference in the world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Social and economic value made simpler.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Hi we're Akou.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchStroud, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“We are a passionate and dedicated team, providing research, evaluation and consultancy services from design through to delivery and dissemination.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Kanso is a leading marketing effectiveness consultancy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchGlasgow, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“The Social Value Lab provides services that transform how organisations plan, measure, and communicate their social impact- Research & Analysis - Project & Programme Evaluation -…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchWarrington, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Work with the UK’s independently recognised leader in social value measurement, development and training.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Interest in impact investing has never been greater.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 104 impact measurement firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 266 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Impact measurement firms based in the United Kingdom at a glance

As of Sep 20, 2026
46.3%Verified-email coverage
5.5Average contacts per company
1-10Median size (employees)
49.0%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
77
11-50
27

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 104 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 “impact measurement 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 266 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 20, 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 firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many impact measurement firms are there based in the United Kingdom?

RevenueBase identified 104 company matches for impact measurement 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?

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

Which city has the most impact measurement firms?

London leads with 51 company records, followed by Manchester (5) and Bristol (3).

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 266 professional contacts with verified work emails tracked across these 104 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 20, 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.