Company lists · Data refreshed September 2026

Top 25 Nonprofit consultants based in London, United Kingdom

Name: Nonprofit consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 541 companies tracked

RevenueBase identified 541 nonprofit consultants headquartered in London, United Kingdom as of September 2026 and tracks 3,886 professional contacts across them, including 832 with verified work emails. London is the largest hub.

This list covers nonprofit consultants headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

541Companies

3,886Contacts tracked

832Verified emails

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The 25 largest nonprofit consultants based in London, United Kingdom

Ranked by team size

Top 25 of 541 nonprofit consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names nonprofit consultants: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Blackmont ConsultingIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	1,221
	“Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.” Source: company website · checked Sep 5, 2026
2	Sayer VincentIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	104
	“Welcome to Sayer Vincent, experts in auditing and advising charities and social purpose organisations.” Source: company website · checked Sep 5, 2026
3	Prospectus B CorpPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	71
	“Established for almost 70 years, Prospectus is a specialist recruitment consultancy and recruitment advertising and design agency working exclusively within the charity and…” Source: company website · checked Sep 5, 2026
4	80,000 HoursIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	69
	“We help people find fulfilling careers that make a big positive impact.” Source: company website · checked Sep 5, 2026
5	Giveclarity.Org LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	61
	“We are a multi-award winning team of 70 experts providing Salesforce.com cloud consultancy software services and apps (Clarity Data Transform, Clarity Gift Aid, Clarity Banking)…” Source: company website · checked Sep 5, 2026
6	Eastside PeopleIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	58
	“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…” Source: company website · checked Sep 5, 2026
7	TPP RecruitmentPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	57
	“TPP Recruitment is a specialist consultancy supporting the UK’s non-profit and public sector to attract and hire people who make a difference.” Source: company website · checked Sep 5, 2026
8	RedquadrantPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	51
	“RedQuadrant is an exciting efficiency and transformation consultancy for the public sector.” Source: company website · checked Sep 5, 2026
9	Chapel & YorkIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	42
	“Looking to grow your international fundraising - or give across borders with confidence?” Source: company website · checked Sep 5, 2026
10	Compton Fundraising Consultants LTDIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	41
	“We are the UK’s leading full-service fundraising consulting firm.” Source: company website · checked Sep 5, 2026
11	BluefrogIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	40
	“About Bluefrog We focus on identifying and meeting donor needs as a means to develop outstanding fundraising strategies and materials.” Source: company website · checked Sep 5, 2026
12	Philanthropy CompanyIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	37
	“Welcome to Philanthropy Company.” Source: company website · checked Sep 5, 2026
13	Hyphen8Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	35
	“Hyphen8 is a Salesforce consultancy whose focus, and passion, is to work in partnership with non-profit organisations to transform the way they work.” Source: company website · checked Sep 5, 2026
14	Directory Of Social ChangeIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	29
	“We’re all here for you.” Source: company website · checked Sep 5, 2026
15	UCL 180 Degrees ConsultingIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	23
	“We are a student-run society at UCL that provides consulting services completely free of charge to socially conscious organizations.” Source: company website · checked Sep 5, 2026
16	Good InnovationIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	22
	“We help charities transform their income and services.” Source: company website · checked Sep 5, 2026
17	Trust ImpactIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	22
	“It’s never been more important for organisations to explore, align, amplify and communicate the positive impact you’re having.” Source: company website · checked Sep 5, 2026
18	Hart SquareIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	21
	“At Hart Square, we have been dedicated to the non-profit sector since 2009.” Source: company website · checked Sep 5, 2026
19	Cause4Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	20
	“Cause4 is a social business founded to support charities to achieve more and become better.” Source: company website · checked Sep 5, 2026
20	AAW Group B CorpPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	20
	“AAW Group are pioneers in non-profit recruitment and strategic fundraising consultancy.” Source: company website · checked Sep 5, 2026
21	KOREOPartial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	18
	“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.” Source: company website · checked Sep 5, 2026
22	Inclusive BoardsIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	17
	“Inclusive Boards is an agency set up specifically to support organisations in efforts to develop boards that are more diverse, inclusive organisations, and stronger governance…” Source: company website · checked Sep 5, 2026
23	Queensbury Legal Services, Project Management & Business Advisory SupportIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	16
	“A multi-disciplinary practice providing expert advisory support to all types, and size, of businesses, entrepreneurs and individuals.” Source: company website · checked Sep 5, 2026
24	LSE London Strategy GroupPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	16
	“London Strategy Group (LSG) is LSE’s premier pro-bono strategy consultancy.” Source: company website · checked Sep 5, 2026
25	The Management Centre Learning MCPartial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	15
	“The Management Centre Learning (=mc Learning) is a training, learning and development consultancy led by directors Laura Slater, Yvette Gyles and Charlie Scott.” Source: company website · checked Sep 5, 2026

Showing 25 of 541 nonprofit consultants based in London, United Kingdom

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Nonprofit consultants based in London, United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 541 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

443

11-50

51-200

201-500

Email recency for this list is measured across the whole United Kingdom list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 541 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nonprofit consultants, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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: Companies headquartered in London, United Kingdom whose own description of what they do matches “nonprofit consultants”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among nonprofit consultants, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 832 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Nonprofit consultants by metro in the United Kingdom

Nonprofit consultants in London541
Nonprofit consultants in Manchester36
Nonprofit consultants in Bristol28
Nonprofit consultants in Edinburgh25

Frequently asked

How many nonprofit consultants are there based in London, United Kingdom?

RevenueBase identified 541 nonprofit consultants headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Blackmont Consulting, headquartered in London, tops this list with the largest team on record.

Which city has the most nonprofit consultants?

London leads with 541 headquartered companies, followed by Manchester (36) and Bristol (28).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 832 verified decision-maker contacts tracked across these 541 companies.

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.