The 100 largest Non-profit Organizations companies in the United Kingdom (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	British Council britishcouncil.org Building global connections through arts, education, English language learning, and qualifications to empower individuals and foster international understanding.	Non-profit Organizations	🇬🇧 London	24,510	1934
2	World Vision wvi.org A global humanitarian organization dedicated to improving the lives of children and families by addressing root causes of poverty worldwide	Non-profit Organizations	🇬🇧 London	19,419	1950
3	Transport for London tfl.gov.uk London-based transportation company leading in providing diverse travel options, focusing on customer feedback, technology innovation, and large-scale investments for city-wide mobility improvements	Non-profit Organizations	🇬🇧 London	18,658	2000
4	Save the Children International savethechildren.net Support children's survival, protection, development, and participation worldwide through programs, campaigns, and partnerships in 120 countries.	Non-profit Organizations	🇬🇧 London	17,356	1919
5	Plan International plan-international.org Advancing children's rights and equality for girls by addressing poverty, violence, exclusion, and discrimination in over 80 countries.	Non-profit Organizations	🇬🇧 Woking	9,932	1937
6	Oxfam oxfam.org.uk A global movement fighting poverty through campaigning for change, development work, and emergency response, with a network of shops and online shop	Non-profit Organizations	🇬🇧 Oxford	9,372	1942
7	British Heart Foundation bhf.org.uk Funding and supporting cardiovascular research to develop treatments, improve healthcare, and prevent heart disease for longer, healthier lives.	Non-profit Organizations	🇬🇧 London	7,494	1961
8	National Trust nationaltrustjobs.org.uk Conservation organization protecting coastline, land, nature reserves, heritage sites, historic houses, gardens, and significant art collections for public enjoyment.	Non-profit Organizations	🇬🇧 Kemble Drive	7,017	n/a
9	Barnardo's barnardos.org.uk Support children, young people, and families to feel safer, happier, healthier, and more hopeful, improving lives through positive change.	Non-profit Organizations	🇬🇧 Barkingside	5,944	1866
10	Citizens Advice citizensadvice.org.uk Charity providing advice and support to individuals from all backgrounds, addressing a wide range of personal and social problems.	Non-profit Organizations	🇬🇧 London	5,832	1939
11	Cancer Research UK (CRUK)cancerresearchuk.org Dedicated to cancer research, prevention, diagnosis, and treatment, funded by public donations to improve survival and quality of life.	Non-profit Organizations	🇬🇧 London	5,433	n/a
12	GLL gll.org Operates leisure centres, libraries, and children’s centres across the UK, supporting community health, sports, and social wellbeing initiatives.	Non-profit Organizations	🇬🇧	4,687	1993
13	Save the Children UK jobs.savethechildren.org.uk Global organization dedicated to helping children worldwide reach their full potential by providing safety, health, education, and advocacy for their rights	Non-profit Organizations	🇬🇧 London	4,602	1919
14	Age UK ageuk.org.uk Provide companionship, advice, and support to millions of older adults, advocating for their interests and enhancing later life quality.	Non-profit Organizations	🇬🇧 London	3,863	2009
15	Amnesty International amnesty.org Global movement exposing abuses, lobbying governments and companies, mobilizing supporters, defending activists, and providing education to claim human rights.	Non-profit Organizations	🇬🇧 London	3,845	n/a
16	The Salvation Army UK and Ireland Territory salvationarmy.org.uk An organization dedicated to saving souls, growing saints, and serving suffering humanity in the United Kingdom and Republic of Ireland	Non-profit Organizations	🇬🇧 London	3,670	1865
17	RNLI rnli.org A charity organization that provides 24-hour search and rescue services, operates lifeguard services on beaches, and offers flood rescue teams	Non-profit Organizations	🇬🇧 Poole	3,393	1824
18	Mencap mencap.org.uk A UK charity working to improve the quality of life for individuals with learning disabilities, advocating for their rights and well-being	Non-profit Organizations	🇬🇧 Peterborough	3,274	n/a
19	SEO London seo-london.org The charity provides educational, training, and mentoring support to young people from underrepresented backgrounds, focusing on pre-professional development, career access, and long-term success	Non-profit Organizations	🇬🇧 London	2,947	2000
20	Riverside riverside.org.uk A leading provider of social housing in the UK, offering support and affordable homes to people of all ages and circumstances	Non-profit Organizations	🇬🇧 Liverpool	2,920	1928
21	Turning Point turning-point.co.uk A social enterprise that provides health and social care services to empower individuals in making positive life choices and improving their wellbeing	Non-profit Organizations	🇬🇧 London	2,829	1964
22	RSPCA rspca.org.uk The organization supports animals with rescue, rehabilitation, advocacy, education, and prevention efforts, including animal rescues and welfare campaigns	Non-profit Organizations	🇬🇧 Horsham	2,816	1824
23	Action for Children actionforchildren.org.uk Charity gifts provide support and joy to vulnerable children during Christmas, helping to spread magic and kindness in communities.	Non-profit Organizations	🇬🇧 Watford	2,600	1869
24	Sue Ryder sueryder.org providing personalized support and care for people approaching end of life or living with grief, ensuring no one faces it alone	Non-profit Organizations	🇬🇧 London	2,525	1953
25	Marie Curie UK mariecurie.org.uk Providing hospice care, support services, research, and campaigns for terminal illness patients and their families across the UK.	Non-profit Organizations	🇬🇧 London	2,388	1948
26	The Sutton Trust suttontrust.com Dedicated to enhancing social mobility through education, the organization funds programs, conducts research, and advocates for policy changes	Non-profit Organizations	🇬🇧 London	2,341	1997
27	RSPB rspb.org.uk A long-standing conservation charity dedicated to protecting nature, forging partnerships, and inspiring others to advocate for a sustainable environment	Non-profit Organizations	🇬🇧 Sandy	2,338	1889
28	Peabody peabody.org.uk A not-for-profit housing association helping individuals thrive at home, work, and in communities through affordable housing and support services	Non-profit Organizations	🇬🇧 London	2,323	1862
29	Alzheimer's Society alzheimers.org.uk Provide support and assistance to people living with dementia, offering help today and hope for a future without devastation.	Non-profit Organizations	🇬🇧 London	2,290	1979
30	One Young World oneyoungworld.com One Young World unites young leaders from around the world to tackle pressing issues, offering a platform for change and innovation	Non-profit Organizations	🇬🇧 London	2,195	2009
31	General Medical Council gmc-uk.org This company in the UK sets and maintains standards for doctors, investigates concerns, and takes action to ensure public confidence in the medical profession	Non-profit Organizations	🇬🇧 London	2,160	1858
32	The King's Trust kingstrust.org.uk A youth charity founded by His Majesty The King in 1976, offering support to young people aged 11-30 in developing skills for success	Non-profit Organizations	🇬🇧 London	2,147	1976
33	Shaw Trust shawtrust.org.uk A social purpose organization focused on challenging inequality, providing employment opportunities, and supporting social mobility through various services and support	Non-profit Organizations	🇬🇧 London	2,124	1982
34	Macmillan Cancer Support macmillan.org.uk Providing comprehensive support for individuals with cancer, covering emotional, physical, and financial needs with unwavering dedication and care	Non-profit Organizations	🇬🇧 London	2,122	1911
35	Scope scope.org.uk A disability equality charity providing support to disabled individuals and their families, advocating for equality and fairness in society	Non-profit Organizations	🇬🇧 London	2,119	1952
36	NSPCC nspcc.org.uk The organization is dedicated to combating child abuse in the UK and Channel Islands, supporting victims, protecting at-risk children, and preventing future abuse	Non-profit Organizations	🇬🇧 London	2,118	1884
37	Unison unison.org.uk This organization is the UK's largest union, providing support, benefits, and services to over 13 million members across various sectors	Non-profit Organizations	🇬🇧 London	2,078	1993
38	Marie Stopes International msichoices.org A company providing reproductive health services, formerly known as MSI Reproductive Choices	Non-profit Organizations	🇬🇧 London	2,022	1976
39	Institution of Engineering and Technology (IET)theiet.org A global engineering institution with 154,000 members in 148 countries, inspiring and influencing engineers worldwide to create a better world	Non-profit Organizations	🇬🇧 Stevenage	1,940	n/a
40	Islamic Relief Worldwide islamic-relief.org faith-based agency providing emergency relief, development projects for vulnerable people globally. Tackles poverty, protects communities from disasters, empowers individuals to transform lives.	Non-profit Organizations	🇬🇧 Birmingham	1,921	1984
41	The RSA (The royal society for arts, manufactures and commerce)thersa.org Uniting people and ideas in collective action to create opportunities for regenerating the world through arts, manufactures, and commerce.	Non-profit Organizations	🇬🇧 London	1,912	n/a
42	The Scouts scouts.org.uk Empowering young people through hands-on learning, teamwork, and adventure, with opportunities for adults to get involved Led by Chief Scout Bear Grylls	Non-profit Organizations	🇬🇧 Chingford	1,877	n/a
43	Royal British Legion britishlegion.org.uk The company is the UK's largest Armed Forces charity, providing support, advocacy, and services to military personnel, veterans, and their families	Non-profit Organizations	🇬🇧 London	1,813	1921
44	Leonard Cheshire leonardcheshire.org Empowering individuals with disabilities to live, learn, and work independently, creating a more inclusive society through research and innovation	Non-profit Organizations	🇬🇧 London	1,791	1948
45	VSO vsointernational.org Leading global organization leveraging volunteers to drive sustainable international development and create lasting impact on communities worldwide	Non-profit Organizations	🇬🇧 London	1,643	1958
46	Royal Society of Chemistry rsc.org This company advances excellence in chemical sciences, supports over 50,000 members, and is a renowned publisher of high-quality chemical science knowledge	Non-profit Organizations	🇬🇧 London	1,618	1841
47	PDSA pdsa.org.uk The company is the UK's leading veterinary charity, providing vital services to over 470,000 pets annually with 48 Pet Hospitals nationwide	Non-profit Organizations	🇬🇧 Telford	1,537	1917
48	Community Integrated Care communityintegratedcare.co.uk A leading UK health and social care charity providing support to individuals with diverse care needs, including learning disabilities, mental health concerns, autism, and more	Non-profit Organizations	🇬🇧 Cheshire	1,495	1988
49	Sense sense.org.uk Empowering those with complex disabilities, including those who are deafblind, to communicate, experience the world, and reach their full potential through personalized support and advocacy	Non-profit Organizations	🇬🇧 London	1,488	1955
50	Samaritans samaritans.org Company provides support for those in crisis, aiming to reduce suicide rates Volunteers offer emotional assistance 24/7 through a free hotline	Non-profit Organizations	🇬🇧 Ewell	1,477	1953
51	Dogs Trust dogstrust.org.uk Charity focused on dog welfare, promoting lifelong commitment to dogs, and supporting dog care and protection across the UK.	Non-profit Organizations	🇬🇧 London	1,474	1891
52	Wellcome Trust wellcome.org Global charitable foundation supporting discovery research in life, health, and wellbeing, addressing mental health, climate, and infectious diseases.	Non-profit Organizations	🇬🇧 London	1,468	1936
53	Housing 21 housing21.org.uk A leading provider of Extra Care and Retirement Living for older people of modest means, operating in 240 local authority areas	Non-profit Organizations	🇬🇧 Birmingham	1,439	1964
54	The National Autistic Society autism.org.uk The company aims to empower autistic individuals, challenge stereotypes, and advocate for a more inclusive society that supports their needs	Non-profit Organizations	🇬🇧 United Kingdom	1,433	1962
55	Malaria Consortium malariaconsortium.org A non-profit organization specializing in preventing, controlling, and treating malaria and other diseases among vulnerable populations in Africa and Asia	Non-profit Organizations	🇬🇧 London	1,410	2003
56	The Social Mobility Foundation socialmobility.org.uk Opens opportunities for young people with fewer options through professional development programmes and campaigns for systemic change to break down social barriers.	Non-profit Organizations	🇬🇧 London	1,408	2006
57	WaterAid wateraid.org An international not-for-profit focused on providing clean water, toilets, and hygiene to everyone to break the cycle of poverty	Non-profit Organizations	🇬🇧 London	1,392	1981
58	Shelter shelter.org.uk Providing free advice, campaigning for change, and developing solutions to address homelessness and housing issues to create safe and affordable homes for everyone	Non-profit Organizations	🇬🇧 London	1,376	1966
59	English Heritage english-heritage.org.uk Charity managing and preserving hundreds of historic sites across England, promoting shared enjoyment and cultural value among millions.	Non-profit Organizations	🇬🇧 Swindon	1,370	2015
60	Cats Protection cats.org.uk A leading cat welfare organization providing support, advice, fostering, and rehoming services, advocating for cat welfare issues, and running a large neutering program	Non-profit Organizations	🇬🇧 Chelwood Gate	1,359	1927
61	RNIB rnib.org.uk A leading UK sight loss charity providing support, services, and products for blind and partially sighted individuals, advocating for accessibility and societal change	Non-profit Organizations	🇬🇧 London	1,336	1868
62	The Guide Dogs for the Blind Association guidedogs.org.uk A company providing life-changing services for people with visual impairments, offering guide dogs, support, and independence through innovative approaches and collaborations	Non-profit Organizations	🇬🇧 Burghfield Common	1,328	1931
63	Girlguiding girlguiding.org.uk Empowering girls through leadership and skill-building activities, with a focus on creating a supportive community for young women's personal growth	Non-profit Organizations	🇬🇧 London	1,303	n/a
64	The Honourable Society of Lincoln's Inn lincolnsinn.org.uk An historic society for lawyers in central London, offering services to members such as a law library, education, accommodation, and event hosting	Non-profit Organizations	🇬🇧 London	1,288	1422
65	GMB gmb.org.uk A trade union with 620,000 members advocating for fair pay, safe working conditions, work/life balance, and legal rights for workers	Non-profit Organizations	🇬🇧 London	1,278	1889
66	Local Council gov.uk Locate and connect with local authorities across England, Wales, Scotland, and Northern Ireland for accessible information and services	Non-profit Organizations	🇬🇧 London	1,275	n/a
67	Notting Hill Genesis group.nhg.org.uk Not-for-profit organisation providing quality, below-market rent homes, developing new properties, supporting 130,000 residents across London communities.	Non-profit Organizations	🇬🇧 London	1,268	2018
68	St Mungo's mungos.org A charity in England helping people end homelessness through direct services, policy influence, and support in finding housing and employment	Non-profit Organizations	🇬🇧 London	1,247	1969
69	CABI cabi.org A non-profit organization applying scientific expertise in agriculture and environment to improve lives globally through international development, research, and publishing	Non-profit Organizations	🇬🇧 Wallingford	1,239	1910
70	Bromford bromford.co.uk This housing association provides homes for rent, shared ownership, and outright sale in central and south west England, focusing on helping people thrive through strong relationships	Non-profit Organizations	🇬🇧 Tewkesbury	1,227	1963
71	Innovate UK ukri.org The company helps businesses grow by supporting the development of new products, services, and processes through innovation, with a focus on testing at their innovation hub	Non-profit Organizations	🇬🇧 Swindon	1,146	2007
72	Catch22 catch-22.org.uk A social business with a not for profit model, providing services that build resilience and aspiration in individuals and communities	Non-profit Organizations	🇬🇧 London	1,146	1788
73	Zoological Society of London (ZSL)zsl.org Science-driven conservation organisation restoring wildlife, protecting species, restoring ecosystems, collaborating globally, inspiring support, and creating sustainable solutions.	Non-profit Organizations	🇬🇧 London	1,135	1826
74	Kids kids.org.uk A UK charity supporting children and young people with special educational needs and disabilities, creating life-changing opportunities for them and their families	Non-profit Organizations	🇬🇧 Sutton Coldfield	1,130	1970
75	Sightsavers sightsavers.org International organization partnering to protect sight and fight for disability rights, focusing on responding to queries within 48 hours	Non-profit Organizations	🇬🇧 Chippenham	1,077	n/a
76	Human Appeal humanappeal.org.uk A global non-profit organization providing immediate relief, healthcare, education, and livelihood programs to empower communities and save lives during emergencies	Non-profit Organizations	🇬🇧 Cheshire	1,064	1991
77	Theirworld theirworld.org A global children's charity dedicated to ending the education crisis, providing a safe learning environment, and developing skills for the future	Non-profit Organizations	🇬🇧 London	1,020	2002
78	Metropolitan Thames Valley mtvh.co.uk A leading UK housing association dedicated to providing affordable homes, care services, and community regeneration to create thriving communities	Non-profit Organizations	🇬🇧 London	1,009	1959
79	The Growth Company growthco.uk A not-for-profit organization driving economic, personal, and professional development through boosting employment, skills, investment, and enterprise within communities	Non-profit Organizations	🇬🇧 Manchester	1,009	n/a
80	Institute of Directors (IoD)iod.com Provides professional development, networking, and expert advice for business leaders, advocating their views in policy and legislation to foster prosperity and improve governance.	Non-profit Organizations	🇬🇧 London	995	1903
81	Rethink Mental Illness rethink.org A charity supporting millions affected by mental illness, providing crisis intervention, independent living support, and fostering a sense of community	Non-profit Organizations	🇬🇧 London	988	1972
82	The Duke of Edinburgh's Award dofe.org This organization is the official source of information, resources, and news about The Duke of Edinburgh’s Award, which develops young people for life and work	Non-profit Organizations	🇬🇧 Reading	983	1956
83	Midland Heart midlandheart.org.uk Manage over 35,000 properties providing safe, quality, and affordable homes for tenants in the Midlands region.	Non-profit Organizations	🇬🇧 Birmingham	983	1925
84	Which?which.co.uk A UK-based organization focused on protecting consumers, providing impartial research, expert advice, product reviews, and advocating for consumer rights	Non-profit Organizations	🇬🇧 London	976	1957
85	Arts Council England artscouncil.org.uk Championing and investing in diverse artistic and cultural experiences across arts, museums, libraries, theatre, music, literature, and crafts.	Non-profit Organizations	🇬🇧 Manchester	964	1940
86	The Children's Society childrenssociety.org.uk This company is dedicated to fighting abuse and neglect to ensure every young person has a good childhood and promising future	Non-profit Organizations	🇬🇧 London	959	1881
87	Abri Group abri.co.uk Manage and own over 58,000 homes, providing affordable, social rent, shared ownership, and market housing across South England.	Non-profit Organizations	🇬🇧 Eastleigh	959	n/a
88	Restless Development restlessdevelopment.org A youth-led development agency empowering young people to drive change and address persistent global issues, reaching millions through various programs	Non-profit Organizations	🇬🇧 London	948	1985
89	CAMFED - Campaign for Female Education camfed.org Pan-African movement revolutionizing girls' education delivery, improving prospects and supporting transition to secure livelihoods and leadership for young women	Non-profit Organizations	🇬🇧 Cambridge	948	1993
90	Royal Aeronautical Society aerosociety.com Dedicated professional body for the entire aerospace community, established 1866. Furthers art, science, and engineering of aeronautics. Membership open to anyone in or interested in the sector.	Non-profit Organizations	🇬🇧 London	941	1866
91	Historic Environment Scotland historicenvironment.scot Preserving Scotland's history and heritage, caring for 300+ properties, managing collections, and investing in national and local organizations, with over 1,200 staff members	Non-profit Organizations	🇬🇧 Edinburgh	920	2015
92	Achieving for Children achievingforchildren.org.uk A social enterprise delivering children's services in Kingston, Richmond, and Windsor & Maidenhead, offering consultancy services nationwide #socialcare #digital #jobs	Non-profit Organizations	🇬🇧 Twickenham	911	2014
93	The Honourable Society of the Middle Temple middletemple.org.uk Exclusive legal training institution providing education, support, property management, and professional community services for barristers and law students.	Non-profit Organizations	🇬🇧 London	910	1608
94	Nacro nacro.org.uk Supporting individuals through housing, justice, substance misuse, and education services, amplifying their voices and advocating for lasting change	Non-profit Organizations	🇬🇧 London	897	1966
95	A2Dominion Group a2dominiongroup.co.uk Provision of social, affordable, supported, and market sale homes with community projects enhancing health, wellbeing, and financial stability.	Non-profit Organizations	🇬🇧 London	879	2008
96	Anchor Trust anchor.org.uk A leading not-for-profit provider of housing, care, and support services for older people, with a strong reputation and social purpose	Non-profit Organizations	🇬🇧 London	876	n/a
97	The British Psychological Society bps.org.uk Representative body for UK psychologists promoting excellence, ethical practice, and advancement in psychology science, education, and practical applications	Non-profit Organizations	🇬🇧 Leicester	875	1901
98	Platform Housing Group platformhg.com A leading housing association in the Midlands, providing quality homes and services across various regions to make a positive impact on communities	Non-profit Organizations	🇬🇧 Solihull	849	2018
99	MAG (Mines Advisory Group)maginternational.org Clearance of land contaminated by explosives, reducing civilian risks, and creating safe conditions for development in conflict-affected areas.	Non-profit Organizations	🇬🇧 Manchester	841	1989
100	Elite elitestaffordshire.co.uk This organization supports disabled individuals and their carers through peer support, information on Direct Payments, Personal Budgets, and community activities for independence	Non-profit Organizations	🇬🇧 Newcastle-under-Lyme	839	2008

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.

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Non-profit Organizations companies in London 215