| # | Company | Employees |
|---|---|---|
| 1 |
British Councilbritishcouncil.org
Building global connections through arts, education, English language learning, and qualifications to empower individuals and foster international understanding. |
24,510 |
| 2 |
World Visionwvi.org
A global humanitarian organization dedicated to improving the lives of children and families by addressing root causes of poverty worldwide |
19,419 |
| 3 |
Transport for Londontfl.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 |
18,658 |
| 4 |
Save the Children Internationalsavethechildren.net
Support children's survival, protection, development, and participation worldwide through programs, campaigns, and partnerships in 120 countries. |
17,356 |
| 5 |
Plan Internationalplan-international.org
Advancing children's rights and equality for girls by addressing poverty, violence, exclusion, and discrimination in over 80 countries. |
9,932 |
| 6 |
Oxfamoxfam.org.uk
A global movement fighting poverty through campaigning for change, development work, and emergency response, with a network of shops and online shop |
9,372 |
| 7 |
British Heart Foundationbhf.org.uk
Funding and supporting cardiovascular research to develop treatments, improve healthcare, and prevent heart disease for longer, healthier lives. |
7,494 |
| 8 |
National Trustnationaltrustjobs.org.uk
Conservation organization protecting coastline, land, nature reserves, heritage sites, historic houses, gardens, and significant art collections for public enjoyment. |
7,017 |
| 9 |
Barnardo'sbarnardos.org.uk
Support children, young people, and families to feel safer, happier, healthier, and more hopeful, improving lives through positive change. |
5,944 |
| 10 |
Citizens Advicecitizensadvice.org.uk
Charity providing advice and support to individuals from all backgrounds, addressing a wide range of personal and social problems. |
5,832 |
| 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. |
5,433 |
| 12 |
Save the Children UKjobs.savethechildren.org.uk
Global organization dedicated to helping children worldwide reach their full potential by providing safety, health, education, and advocacy for their rights |
4,602 |
| 13 |
Age UKageuk.org.uk
Provide companionship, advice, and support to millions of older adults, advocating for their interests and enhancing later life quality. |
3,863 |
| 14 |
Amnesty Internationalamnesty.org
Global movement exposing abuses, lobbying governments and companies, mobilizing supporters, defending activists, and providing education to claim human rights. |
3,845 |
| 15 |
The Salvation Army UK and Ireland Territorysalvationarmy.org.uk
An organization dedicated to saving souls, growing saints, and serving suffering humanity in the United Kingdom and Republic of Ireland |
3,670 |
| 16 | 3,393 | |
| 17 |
Mencapmencap.org.uk
A UK charity working to improve the quality of life for individuals with learning disabilities, advocating for their rights and well-being |
3,274 |
| 18 |
SEO Londonseo-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 |
2,947 |
| 19 |
Riversideriverside.org.uk
A leading provider of social housing in the UK, offering support and affordable homes to people of all ages and circumstances |
2,920 |
| 20 |
Turning Pointturning-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 |
2,829 |
| 21 |
RSPCArspca.org.uk
The organization supports animals with rescue, rehabilitation, advocacy, education, and prevention efforts, including animal rescues and welfare campaigns |
2,816 |
| 22 |
Action for Childrenactionforchildren.org.uk
Charity gifts provide support and joy to vulnerable children during Christmas, helping to spread magic and kindness in communities. |
2,600 |
| 23 |
Sue Rydersueryder.org
providing personalized support and care for people approaching end of life or living with grief, ensuring no one faces it alone |
2,525 |
| 24 |
Marie Curie UKmariecurie.org.uk
Providing hospice care, support services, research, and campaigns for terminal illness patients and their families across the UK. |
2,388 |
| 25 |
The Sutton Trustsuttontrust.com
Dedicated to enhancing social mobility through education, the organization funds programs, conducts research, and advocates for policy changes |
2,341 |
| 26 |
RSPBrspb.org.uk
A long-standing conservation charity dedicated to protecting nature, forging partnerships, and inspiring others to advocate for a sustainable environment |
2,338 |
| 27 |
Peabodypeabody.org.uk
A not-for-profit housing association helping individuals thrive at home, work, and in communities through affordable housing and support services |
2,323 |
| 28 |
Alzheimer's Societyalzheimers.org.uk
Provide support and assistance to people living with dementia, offering help today and hope for a future without devastation. |
2,290 |
| 29 |
One Young Worldoneyoungworld.com
One Young World unites young leaders from around the world to tackle pressing issues, offering a platform for change and innovation |
2,195 |
| 30 |
General Medical Councilgmc-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 |
2,160 |
| 31 |
The King's Trustkingstrust.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 |
2,147 |
| 32 |
Shaw Trustshawtrust.org.uk
A social purpose organization focused on challenging inequality, providing employment opportunities, and supporting social mobility through various services and support |
2,124 |
| 33 |
Macmillan Cancer Supportmacmillan.org.uk
Providing comprehensive support for individuals with cancer, covering emotional, physical, and financial needs with unwavering dedication and care |
2,122 |
| 34 |
Scopescope.org.uk
A disability equality charity providing support to disabled individuals and their families, advocating for equality and fairness in society |
2,119 |
| 35 |
NSPCCnspcc.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 |
2,118 |
| 36 |
Unisonunison.org.uk
This organization is the UK's largest union, providing support, benefits, and services to over 13 million members across various sectors |
2,078 |
| 37 |
Marie Stopes Internationalmsichoices.org
A company providing reproductive health services, formerly known as MSI Reproductive Choices |
2,022 |
| 38 |
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 |
1,940 |
| 39 |
Islamic Relief Worldwideislamic-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. |
1,921 |
| 40 |
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. |
1,912 |
| 41 |
The Scoutsscouts.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 |
1,877 |
| 42 |
Royal British Legionbritishlegion.org.uk
The company is the UK's largest Armed Forces charity, providing support, advocacy, and services to military personnel, veterans, and their families |
1,813 |
| 43 |
Leonard Cheshireleonardcheshire.org
Empowering individuals with disabilities to live, learn, and work independently, creating a more inclusive society through research and innovation |
1,791 |
| 44 |
VSOvsointernational.org
Leading global organization leveraging volunteers to drive sustainable international development and create lasting impact on communities worldwide |
1,643 |
| 45 |
Royal Society of Chemistryrsc.org
This company advances excellence in chemical sciences, supports over 50,000 members, and is a renowned publisher of high-quality chemical science knowledge |
1,618 |
| 46 |
PDSApdsa.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 |
1,537 |
| 47 |
Community Integrated Carecommunityintegratedcare.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 |
1,495 |
| 48 |
Sensesense.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 |
1,488 |
| 49 |
Samaritanssamaritans.org
Company provides support for those in crisis, aiming to reduce suicide rates Volunteers offer emotional assistance 24/7 through a free hotline |
1,477 |
| 50 |
Dogs Trustdogstrust.org.uk
Charity focused on dog welfare, promoting lifelong commitment to dogs, and supporting dog care and protection across the UK. |
1,474 |
| 51 |
Wellcome Trustwellcome.org
Global charitable foundation supporting discovery research in life, health, and wellbeing, addressing mental health, climate, and infectious diseases. |
1,468 |
| 52 |
Housing 21housing21.org.uk
A leading provider of Extra Care and Retirement Living for older people of modest means, operating in 240 local authority areas |
1,439 |
| 53 |
Malaria Consortiummalariaconsortium.org
A non-profit organization specializing in preventing, controlling, and treating malaria and other diseases among vulnerable populations in Africa and Asia |
1,410 |
| 54 |
The Social Mobility Foundationsocialmobility.org.uk
Opens opportunities for young people with fewer options through professional development programmes and campaigns for systemic change to break down social barriers. |
1,408 |
| 55 |
WaterAidwateraid.org
An international not-for-profit focused on providing clean water, toilets, and hygiene to everyone to break the cycle of poverty |
1,392 |
| 56 |
Sheltershelter.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 |
1,376 |
| 57 |
English Heritageenglish-heritage.org.uk
Charity managing and preserving hundreds of historic sites across England, promoting shared enjoyment and cultural value among millions. |
1,370 |
| 58 |
Cats Protectioncats.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 |
1,359 |
| 59 |
RNIBrnib.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 |
1,336 |
| 60 |
The Guide Dogs for the Blind Associationguidedogs.org.uk
A company providing life-changing services for people with visual impairments, offering guide dogs, support, and independence through innovative approaches and collaborations |
1,328 |
| 61 |
Girlguidinggirlguiding.org.uk
Empowering girls through leadership and skill-building activities, with a focus on creating a supportive community for young women's personal growth |
1,303 |
| 62 |
The Honourable Society of Lincoln's Innlincolnsinn.org.uk
An historic society for lawyers in central London, offering services to members such as a law library, education, accommodation, and event hosting |
1,288 |
| 63 |
GMBgmb.org.uk
A trade union with 620,000 members advocating for fair pay, safe working conditions, work/life balance, and legal rights for workers |
1,278 |
| 64 |
Local Councilgov.uk
Locate and connect with local authorities across England, Wales, Scotland, and Northern Ireland for accessible information and services |
1,275 |
| 65 |
Notting Hill Genesisgroup.nhg.org.uk
Not-for-profit organisation providing quality, below-market rent homes, developing new properties, supporting 130,000 residents across London communities. |
1,268 |
| 66 |
St Mungo'smungos.org
A charity in England helping people end homelessness through direct services, policy influence, and support in finding housing and employment |
1,247 |
| 67 | 1,239 | |
| 68 |
Bromfordbromford.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 |
1,227 |
| 69 |
Innovate UKukri.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 |
1,146 |
| 70 |
Catch22catch-22.org.uk
A social business with a not for profit model, providing services that build resilience and aspiration in individuals and communities |
1,146 |
| 71 |
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. |
1,135 |
| 72 |
Kidskids.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 |
1,130 |
| 73 |
Sightsaverssightsavers.org
International organization partnering to protect sight and fight for disability rights, focusing on responding to queries within 48 hours |
1,077 |
| 74 |
Human Appealhumanappeal.org.uk
A global non-profit organization providing immediate relief, healthcare, education, and livelihood programs to empower communities and save lives during emergencies |
1,064 |
| 75 |
Theirworldtheirworld.org
A global children's charity dedicated to ending the education crisis, providing a safe learning environment, and developing skills for the future |
1,020 |
| 76 |
Metropolitan Thames Valleymtvh.co.uk
A leading UK housing association dedicated to providing affordable homes, care services, and community regeneration to create thriving communities |
1,009 |
| 77 |
The Growth Companygrowthco.uk
A not-for-profit organization driving economic, personal, and professional development through boosting employment, skills, investment, and enterprise within communities |
1,009 |
| 78 |
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. |
995 |
| 79 |
Rethink Mental Illnessrethink.org
A charity supporting millions affected by mental illness, providing crisis intervention, independent living support, and fostering a sense of community |
988 |
| 80 |
The Duke of Edinburgh's Awarddofe.org
This organization is the official source of information, resources, and news about The Duke of Edinburgh鈥檚 Award, which develops young people for life and work |
983 |
| 81 |
Midland Heartmidlandheart.org.uk
Manage over 35,000 properties providing safe, quality, and affordable homes for tenants in the Midlands region. |
983 |
| 82 |
Which?which.co.uk
A UK-based organization focused on protecting consumers, providing impartial research, expert advice, product reviews, and advocating for consumer rights |
976 |
| 83 |
Arts Council Englandartscouncil.org.uk
Championing and investing in diverse artistic and cultural experiences across arts, museums, libraries, theatre, music, literature, and crafts. |
964 |
| 84 |
The Children's Societychildrenssociety.org.uk
This company is dedicated to fighting abuse and neglect to ensure every young person has a good childhood and promising future |
959 |
| 85 |
Abri Groupabri.co.uk
Manage and own over 58,000 homes, providing affordable, social rent, shared ownership, and market housing across South England. |
959 |
| 86 |
Restless Developmentrestlessdevelopment.org
A youth-led development agency empowering young people to drive change and address persistent global issues, reaching millions through various programs |
948 |
| 87 |
CAMFED - Campaign for Female Educationcamfed.org
Pan-African movement revolutionizing girls' education delivery, improving prospects and supporting transition to secure livelihoods and leadership for young women |
948 |
| 88 |
Royal Aeronautical Societyaerosociety.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. |
941 |
| 89 |
Achieving for Childrenachievingforchildren.org.uk
A social enterprise delivering children's services in Kingston, Richmond, and Windsor & Maidenhead, offering consultancy services nationwide #socialcare #digital #jobs |
911 |
| 90 |
The Honourable Society of the Middle Templemiddletemple.org.uk
Exclusive legal training institution providing education, support, property management, and professional community services for barristers and law students. |
910 |
| 91 |
Nacronacro.org.uk
Supporting individuals through housing, justice, substance misuse, and education services, amplifying their voices and advocating for lasting change |
897 |
| 92 |
A2Dominion Groupa2dominiongroup.co.uk
Provision of social, affordable, supported, and market sale homes with community projects enhancing health, wellbeing, and financial stability. |
879 |
| 93 |
Anchor Trustanchor.org.uk
A leading not-for-profit provider of housing, care, and support services for older people, with a strong reputation and social purpose |
876 |
| 94 |
The British Psychological Societybps.org.uk
Representative body for UK psychologists promoting excellence, ethical practice, and advancement in psychology science, education, and practical applications |
875 |
| 95 |
Platform Housing Groupplatformhg.com
A leading housing association in the Midlands, providing quality homes and services across various regions to make a positive impact on communities |
849 |
| 96 |
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. |
841 |
| 97 |
Eliteelitestaffordshire.co.uk
This organization supports disabled individuals and their carers through peer support, information on Direct Payments, Personal Budgets, and community activities for independence |
839 |
| 98 |
CBI (Confederation of British Industry)cbi.org.uk
Voice for British businesses across all sectors and regions, facilitating collaboration between industry leaders and government officials to promote sustainable economic growth. |
827 |
| 99 |
CHPchp.org.uk
A charitable housing association based in Chelmsford, Essex, providing affordable homes for rent and sale, while focusing on transforming lives and communities |
826 |
| 100 |
Aster Group UKaster.co.uk
The company's vision is to provide housing options to address the housing crisis, ensuring everyone has a safe and secure home |
823 |
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How this list is built
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 24, 2026.
More company lists in England
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