Company lists · Data refreshed September 2026

Top 25 Nonprofit marketing agencies based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 89 companies tracked

RevenueBase identified 89 company matches for nonprofit marketing agencies associated with London, United Kingdom as of September 2026 and tracks 360 professional contacts across them, including 114 with verified work emails and 39 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for nonprofit marketing agencies 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

89Companies

360Contacts tracked

114Verified emails

39Mobile numbers

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The 25 largest nonprofit marketing agencies based in London, United Kingdom

Ranked by team size

Top 25 of 89 company matches for nonprofit marketing agencies 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Cerealbox	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	30 contacts →
	Exact match “Are you a fundraiser wanting to increase online donations?” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
2	Five By Five Global	Exact match	London, United KingdomHQ recorded Sep 13, 2026	51-200	28 contacts →
	Exact match “Five by Five is an independent and integrated agency with offices in London, Los Angeles and Sydney.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
3	Empower Agency	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	18 contacts →
	Exact match “Empower is a strategic digital comms agency for causes creating impact around the world.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
4	ASK US For Ideas	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	14 contacts →
	Exact match “We help businesses of all sizes find their perfect agency partner for branding, web, product, social, growth, marketing and MORE.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
5	Platypus Digital B Corp	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	14 contacts →
	Exact match “Platypus Digital is a digital marketing agency that works exclusively with charities.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
6	Bluefrog Fundraising Limited	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	11 contacts →
	Exact match “Based in Shoreditch, we’re a team of just over 30, focused on delivering exceptional creative work to inspire donors to support the causes they care about.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
7	Mbastack	Exact match	London, United KingdomHQ recorded Sep 13, 2026	51-200	10 contacts →
	Exact match “Marketing agency.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
8	SEKNA	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	9 contacts →
	Exact match “Sekna is a digital marketing agency that empowers charities and NGOs to make a meaningful impact.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
9	The Drummer Agency	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	8 contacts →
	Exact match “We bring insight, creativity and expertise to help achieve growth and deliver real impact for people-serving causes.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
10	TOP Left Design	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	8 contacts →
	Exact match “We help our clients find out their “Unique Greatness” and understand what they need to share and show online.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
11	RVLV	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	6 contacts →
	Exact match “There is always the potential to grow.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
12	Hope Agency	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	6 contacts →
	Exact match “When you step back, you see more.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
13	4change Marketing	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	6 contacts →
	Exact match “We’re a sustainability focused marketing agency based in the heart of London.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
14	Good Company	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	6 contacts →
	Exact match “We help brands tell their story and connect with new audiences through partnerships, positioning and powerful content - campaigns that connect the dots, memorable moments and…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
15	AVE	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	5 contacts →
	Exact match “We are Ave.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
16	RED Pencil	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	5 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
17	Creative Impact Club	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	4 contacts →
	Exact match “We’re a not-for-profit club of over 500 amazing creative professionals from more than 30 disciplines using our creative skills to support local Social Impact Entrepreneurs…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
18	YES We CAN Agency	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	3 contacts →
	Exact match “Welcome to Yes We Can, a boutique digital marketing agency dedicated to helping socially responsible companies drive growth with purpose.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
19	Narrative	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “We're Narrative, a creative agency for charity and cause-driven brands.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
20	Musson Marketing	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Musson Marketing has helped businesses save time, create their brand presence and achieve their goals.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
21	Vanguard Solutions	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Vanguard Solutions is a Marketing and Advertising agency designed to help you with all of your Marketing, Advertising, Branding, Social Media & Website Development challenges!” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
22	Unbaffled	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	1 contacts →
	Exact match “We’re Unbaffled.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
23	Wefantastic	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	1 contacts →
	Exact match “WeFantastic is a multidisciplinary marketing company based in London and Istanbul.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
24	Always Marketing	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	1 contacts →
	Exact match “Always Marketing was set up to help charities and not-for-profit organisations maximise resources and budgets to achieve their marketing communications goals.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
25	Emerging Mountains	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	1 contacts →
	Exact match “Emerging Mountains provides marketing controlling for established small businesses.” Recorded in the RevenueBase company graph · Sep 13, 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 “nonprofit marketing agencies”. 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 89 nonprofit marketing agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 114 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit marketing agencies based in London, United Kingdom at a glance

As of Sep 13, 2026

31.7%Verified-email coverage

10.8%Mobile-number coverage

4.0Average contacts per company

1-10Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

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

Email last verified

Median 15.0d

870–30

2631–60

061–90

090–180

1180+

Company record updated

Median 65.0d

00–30

14131–60

14261–90

5190–180

26180+

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 marketing agencies” 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 114 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 marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 89 company matches for nonprofit marketing agencies 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?

Cerealbox 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 marketing agencies?

London leads the United Kingdom with 114 company records, followed by Brighton (11) and Bristol (11).

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 114 professional contacts with verified work emails tracked across these 89 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.