Company lists · Data refreshed September 2026

Top 25 International relief organizations based in the United Kingdom

Name: International relief organizations based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 160 companies tracked

RevenueBase identified 160 international relief organizations headquartered in the United Kingdom as of September 2026 and tracks 23,063 professional contacts across them, including 6,497 with verified work emails. London is the largest hub.

This list covers international relief organizations headquartered in the 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

160Companies

23,063Contacts tracked

6,497Verified emails

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The 25 largest international relief organizations based in the United Kingdom

Ranked by team size

Top 25 of 160 international relief organizations based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to international relief organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	World Vision	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	10001+	12,037 contacts →
	Indirect evidence “World Vision is the largest child-focused private charity in the world.” Source: RevenueBase Database · checked Sep 19, 2026
2	British RED Cross	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	3,858 contacts →
	Indirect evidence “For over 150 years, the British Red Cross has been here for humanity.” Source: RevenueBase Database · checked Sep 19, 2026
3	Tearfund	Indirect evidence	Teddington, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,185 contacts →
	Indirect evidence “Looking to work for a charity that has Jesus at its heart?” Source: RevenueBase Database · checked Sep 19, 2026
4	Human Appeal	Partial evidence	Cheshire, United KingdomHQ checked Sep 19, 2026	n/a	629 contacts →
	Partial evidence “Human Appeal is a UK-based international humanitarian and development organisation delivering life-saving aid and sustainable development programmes in over 30 countries across…” Source: RevenueBase Database · checked Sep 19, 2026
5	Muslim Hands	Indirect evidence	Nottingham, United KingdomHQ checked Sep 19, 2026	201-500	450 contacts →
	Indirect evidence “In 1993, a community in Nottingham, moved by the devastation of the Bosnian war, sprang into action.” Source: RevenueBase Database · checked Sep 19, 2026
6	Muslim AID UK	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	303 contacts →
	Partial evidence “Muslim Aid is an International Not-For-Profit providing support to communities around the world affected by disasters, conflict or endemic poverty without regard to their social…” Source: RevenueBase Database · checked Sep 19, 2026
7	The Mentor Initiative	Indirect evidence	Haywards Heath, United KingdomHQ checked Sep 19, 2026	201-500	291 contacts →
	Indirect evidence “The MENTOR Initiative ('MENTOR') specialises in integrated disease control and supporting primary and secondary healthcare services in health and humanitarian emergencies.” Source: RevenueBase Database · checked Sep 19, 2026
8	Afghanaid	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	214 contacts →
	Indirect evidence “Afghanaid is a British humanitarian and development organisation.” Source: RevenueBase Database · checked Sep 19, 2026
9	Shelterbox	Indirect evidence	Truro, United KingdomHQ checked Sep 19, 2026	51-200	200 contacts →
	Indirect evidence “ShelterBox provides emergency shelter and vital supplies to support communities around the world overwhelmed by disaster and humanitarian crisis.” Source: RevenueBase Database · checked Sep 19, 2026
10	Action For Humanity	Indirect evidence	Manchester, United KingdomHQ checked Sep 19, 2026	1,001-5,000	198 contacts →
	Indirect evidence “We are Action For Humanity.” Source: RevenueBase Database · checked Sep 19, 2026
11	Islamic Relief UK	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	148 contacts →
	Strong evidence “Whoever saved a life, it would be as if they saved the life of all mankind."(Qur'an 5:32) Islamic Relief is an international non-governmental organisation (INGO) founded in the UK…” Source: RevenueBase Database · checked Sep 19, 2026
12	Start Network	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	136 contacts →
	Partial evidence “Start Network is a global network of non-governmental organisations, made up of more than 80 national and international aid agencies from five continents.” Source: RevenueBase Database · checked Sep 19, 2026
13	Redr UK	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	125 contacts →
	Indirect evidence “Humanitarian capacity-building NGO.” Source: RevenueBase Database · checked Sep 19, 2026
14	Human Relief Foundation	Strong evidence	Bradford, United KingdomHQ checked Sep 19, 2026	51-200	101 contacts →
	Strong evidence “Human Relief Foundation is an international charity with over thirty years of experience successfully delivering humanitarian aid and positive outcomes to communities whose lives…” Source: RevenueBase Database · checked Sep 19, 2026
15	Khalsa AID International	Partial evidence	Taplow, United KingdomHQ checked Sep 19, 2026	11-50	80 contacts →
	Partial evidence “Khalsa Aid is an international NGO with the aim to provide humanitarian aid in disaster areas and civil conflict zones around the world.” Source: RevenueBase Database · checked Sep 19, 2026
16	International Rescue Committee UK	Partial evidence	Moorgate, United KingdomHQ checked Sep 19, 2026	51-200	63 contacts →
	Partial evidence “International Rescue Committee UK is a company based out of 3 Bloomsbury Place, London, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
17	MWF Minhaj Welfare Foundation	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	1,001-5,000	59 contacts →
	Partial evidence “Minhaj Welfare Foundation is one of the largest non-government international charity organisation’s in the world, with a growing network of branches and projects in various…” Source: RevenueBase Database · checked Sep 19, 2026
18	Disasters Emergency Committee	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	58 contacts →
	Partial evidence “The DEC brings 15 leading UK aid charities together in times of crisis: Action Against Hunger UK, ActionAid, Age International, British Red Cross, CAFOD, CARE International UK…” Source: RevenueBase Database · checked Sep 19, 2026
19	Choose Love	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	48 contacts →
	Indirect evidence “Choose Love is a fast, flexible and innovative movement that delivers humanitarian aid by working directly with the communities who need it.” Source: RevenueBase Database · checked Sep 19, 2026
20	Rapid Relief Team RRT United Kingdom	Partial evidence	Eaton Socon, United KingdomHQ checked Sep 19, 2026	1,001-5,000	45 contacts →
	Partial evidence “RRT delivers hope and relief to people across the globe.” Source: RevenueBase Database · checked Sep 19, 2026
21	Humanity First International	Partial evidence	Surbiton, United KingdomHQ checked Sep 19, 2026	501-1,000	45 contacts →
	Partial evidence “Our Mission Humanity First is an international charitable trust established to promote and safeguard the preservation of human life and dignity.” Source: RevenueBase Database · checked Sep 19, 2026
22	ONE Ummah	Partial evidence	Middlesbrough, United KingdomHQ checked Sep 19, 2026	11-50	38 contacts →
	Partial evidence “One Ummah is an award-winning, humanitarian and disaster relief aid organisation based in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
23	Muslim Charity	Strong evidence	Retford, United KingdomHQ checked Sep 19, 2026	11-50	37 contacts →
	Strong evidence “Muslim Charity is a leading international relief and development organisation which works to alleviate human suffering around the world and is dedicated in helping the needy…” Source: RevenueBase Database · checked Sep 19, 2026
24	The World Federation Of Ksimc	Indirect evidence	Stanmore, United KingdomHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “The World Federation of KSIMC is an NGO in special consultative status with the economic and social council (ECOSOC) of the United Nations.” Source: RevenueBase Database · checked Sep 19, 2026
25	Humanity First UK	Partial evidence	Chessington, United KingdomHQ checked Sep 19, 2026	51-200	34 contacts →
	Partial evidence “Humanity First (UK charity number 1188494) provides assistance on the basis of need irrespective of race, religion or politics from registered offices in 67 countries across 6…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: international relief organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names international relief organizations.
Partial evidence: Its own public description names part of international relief organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international relief organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 160 international relief organizations based in the United Kingdom

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International relief organizations based in the United Kingdom at a glance

As of Sep 19, 2026

28.2%Verified-email coverage

144.1Average contacts per company

1-10Median size (employees)

41.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 160 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 international relief organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “international relief organizations”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names international relief organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among international relief organizations, and records with no verified work email. Companies headquartered outside United Kingdom 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 its RevenueBase Smart Search 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, 6,497 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 19, 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.

International relief organizations by metro

International relief organizations in London67

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names international relief organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many international relief organizations are there based in the United Kingdom?

RevenueBase identified 160 international relief organizations headquartered in the 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?

World Vision, headquartered in Uxbridge, tops this list with the largest team on record.

Which city has the most international relief organizations?

London leads with 67 headquartered companies, followed by Birmingham (8) and Manchester (6).

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 6,497 verified decision-maker contacts tracked across these 160 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 19, 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 Smart Search, 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.