Company lists · Data refreshed September 2026

Top 24 Nonprofit consulting firms based in London, United Kingdom

RevenueBase identified 170 company matches for nonprofit consulting firms associated with London, United Kingdom as of September 2026 and tracks 2,078 professional contacts across them, including 227 with verified work emails and 79 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for nonprofit consulting firms 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 13, 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 13, 2026 How this list was built
170Companies
2,078Contacts tracked
227Verified emails
79Mobile numbers
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The 24 largest nonprofit consulting firms based in London, United Kingdom

Ranked by team size
Top 24 of 170 company matches for nonprofit consulting firms based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 13, 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 13, 2026201-5001,221 contacts →

Exact match

“Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5042 contacts →

Exact match

“Looking to grow your international fundraising - or give across borders with confidence?”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5041 contacts →

Exact match

“We are the UK’s leading full-service fundraising consulting firm.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5037 contacts →

Exact match

“Welcome to Philanthropy Company.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5023 contacts →

Exact match

“We are a student-run society at UCL that provides consulting services completely free of charge to socially conscious organizations.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5022 contacts →

Exact match

“We help charities transform their income and services.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5021 contacts →

Exact match

“At Hart Square, we have been dedicated to the non-profit sector since 2009.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-5020 contacts →

Exact match

“AAW Group are pioneers in non-profit recruitment and strategic fundraising consultancy.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 13, 202651-20016 contacts →

Exact match

“London Strategy Group (LSG) is LSE’s premier pro-bono strategy consultancy.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-1015 contacts →

Exact match

“IFCo is an award-winning consultancy specialising in fundraising, management, marketing and communications.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-1011 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-508 contacts →

Exact match

“Independently owned, a purpose driven organisation, b2b works with well-known charities, professional bodies and not-for-profits.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-107 contacts →

Exact match

“Integra Group is a strategy, communications and philanthropy consultancy.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-106 contacts →

Exact match

“Grey Lemon cuts through the murky grey areas of business to create clear, robust and measurable strategies that work.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-106 contacts →

Exact match

“We help not for profits improve their fundraising so they can keep doing what they do brilliantly – making a difference to the world around us.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-106 contacts →

Exact match

“Philia International is a not-for-profit board and leadership consultancy.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-106 contacts →

Exact match

“Helping leadership teams and trustees navigate change with confidence.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-105 contacts →

Exact match

“Running a charity today is both inspiring and demanding.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-105 contacts →

Exact match

“We are an independent marketing, branding and fundraising consultancy that helps organisations to get their products and services noticed, communicate the impact of their work and…”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-505 contacts →

Exact match

“The Pedro Club is a nonprofit organization management company based out of 175 Rushmore Rd, London, United Kingdom.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-105 contacts →

Exact match

“Elysian Fields is a consultancy of globally experienced marketing, investment and product specialists.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 13, 202611-504 contacts →

Exact match

“Skyline are typically invited in by the CEOs, Trustees and Directors of successful and ambitious charities.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-103 contacts →

Exact match

“Non profits, improve your fundraising, grow your revenue and make more impact!”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 13, 20261-103 contacts →

Exact match

“Bright Ideas Consulting Ltd.”

Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase

Showing 24 of 170 nonprofit consulting firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 227 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit consulting firms based in London, United Kingdom at a glance

As of Sep 13, 2026
10.9%Verified-email coverage
3.8%Mobile-number coverage
12.2Average contacts per company
1-10Median size (employees)
Sep 13, 2026Page data refreshed

Companies by employee count

1-10
138
11-50
28
51-200
3
201-500
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

Company record updated

Median 64.0d

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 “nonprofit 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 227 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 13, 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 “nonprofit consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 170 company matches for nonprofit consulting firms 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?

Blackmont Consulting 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 nonprofit consulting firms?

London leads the United Kingdom with 170 company records, followed by Edinburgh (10) and Manchester (9).

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 227 professional contacts with verified work emails tracked across these 170 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 13, 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.