# Startup incubators and accelerators headquartered in the United Kingdom

Tamtam tracks 80 startup incubators and accelerators headquartered in the United Kingdom. This list ranks the 50 largest by number of employees on LinkedIn, led by Blenheim Chalcot, Ark and Model. Their median headcount is 147. Half of them were founded in 2013 or later. The most common headquarters are London (31), Cambridge (3) and Oxford (2).

This selection of large UK startup incubators and accelerators shows a focus on technology, education, and sustainability. Blenheim Chalcot is a venture builder that invests in high-growth sectors. Ark is an international charity providing quality education. Entrepreneur First is a platform connecting co-founders and helping them raise funds. ZINC invests in founders building businesses that address critical challenges for people and planetary health.

Most of these organizations are based in London, with a notable cluster also in Cambridge. The entities here include established universities like Buckinghamshire New University and the Royal College of Art, alongside newer venture builders and accelerators founded in the 2010s, reflecting a mix of long-standing educational institutions and more recent initiatives supporting innovation.

🇬🇧 United Kingdom · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Blenheim Chalcot](https://www.tamtam.ai/c/blenheim-chalcot) (blenheimchalcot.com)<br>A venture builder investing in high-growth sectors by providing funds, expertise, and infrastructure to build profitable, scalable companies globally | Technology, Information and Internet | 🇬🇧 London | 2,370 | 1998 |
| 2 | [Ark](https://www.tamtam.ai/c/ark-london) (arkonline.org)<br>International charity providing quality education through a network of schools and innovative ventures to improve life choices for youth. | Education Administration Programs | 🇬🇧 London | 2,039 | 2006 |
| 3 | [Model](https://www.tamtam.ai/c/model) (startuply.net)<br>Supporting tech startups in the UK with full-lifecycle services, custom programs, and connections in nine focus areas, without taking equity | International Affairs | 🇬🇧 London | 1,816 |  |
| 4 | [Buckinghamshire New University](https://www.tamtam.ai/c/buckinghamshire-new-university) (bucks.ac.uk)<br>A well-established university offering a wide range of courses, services to industry, state-of-the-art facilities, and exclusive student experiences to enrich the student community | Higher Education | 🇬🇧 High Wycombe | 1,772 | 1891 |
| 5 | [Royal College of Art](https://www.tamtam.ai/c/royal-college-of-art) (rca.ac.uk)<br>Specialist postgraduate university offering art, design, architecture, and humanities programs focused on innovation, research, and global challenge solutions. | Design Services | 🇬🇧 London | 1,452 |  |
| 6 | [Cambridge Judge Business School](https://www.tamtam.ai/c/cambridge-judge-business-school) (jbs.cam.ac.uk)<br>Educates business leaders through world-class faculty, offering MBA, Master of Finance, Executive MBA, MAcc, PhD, MPhil, undergraduate, and executive education courses. | Higher Education | 🇬🇧 Cambridge | 925 |  |
| 7 | [Entrepreneur First](https://www.tamtam.ai/c/entrepreneur-first) (joinef.com)<br>A platform bringing exceptional individuals together to meet co-founders, develop ideas, and raise funds for startups, with backing from top tech founders and investors | Venture Capital and Private Equity Principals | 🇬🇧 London | 766 | 2011 |
| 8 | [Cambridge Institute for Sustainability Leadership (CISL)](https://www.tamtam.ai/c/cambridge-institute-for-sustainability-leadership-cisl) (cisl.cam.ac.uk)<br>Develops industry leadership, sector pathways, and viable solutions to transform markets for a sustainable future. Works with leaders to accelerate action and transition. | Education | 🇬🇧 Cambridge | 465 | 1988 |
| 9 | [ZINC](https://www.tamtam.ai/c/zinc-london) (zinc.vc)<br>Invests in founders to build businesses solving critical challenges for people and planet health using cutting-edge science and technology. | Venture Capital and Private Equity Principals | 🇬🇧 London | 420 | 2017 |
| 10 | [TTP Group](https://www.tamtam.ai/c/ttp-group) (ttpgroup.com)<br>A group of technology-focused businesses developing breakthrough products, applying innovations, and creating new technologies to help companies thrive | Research Services | 🇬🇧 Melbourn | 394 | 1997 |
| 11 | [NHS Clinical Entrepreneur Programme](https://www.tamtam.ai/c/nhs-clinical-entrepreneur-programme) (nhscep.com)<br>Supports healthcare staff with skills and knowledge to develop and spread innovation, benefiting patients, the public, and the NHS. | Hospitals and Health Care | 🇬🇧 Chelmsford | 389 | 2016 |
| 12 | [Connected Places Catapult](https://www.tamtam.ai/c/connected-places-catapult) (cp.catapult.org.uk)<br>An innovation accelerator specializing in cities, transport, and place leadership, connecting businesses and public sector leaders to drive growth and reduce carbon emissions | Research Services | 🇬🇧 London | 320 | 2019 |
| 13 | [IMAGINE](https://www.tamtam.ai/c/imagine) (imagine.one)<br>IMAGINE is a collective founded in 2019 to drive systemic change through transformational leadership and innovation in climate action and social equity | Professional Organizations | 🇬🇧 London | 310 | 2019 |
| 14 | [Digital Catapult](https://www.tamtam.ai/c/digital-catapult) (digicatapult.org.uk)<br>Accelerate deep technology adoption by partnering with businesses, investors, and academia to create market pathways and support UK innovation growth. | Software Development | 🇬🇧 London | 307 | 2013 |
| 15 | [Carbon13](https://www.tamtam.ai/c/carbon13) (bit.ly)<br>Venture builder focused on addressing the climate emergency by supporting entrepreneurs to build ventures reducing or removing 10 million tonnes of CO2e per annum | Venture Capital and Private Equity Principals | 🇬🇧 Cambridge | 283 | 2019 |
| 16 | [Energy Systems Catapult](https://www.tamtam.ai/c/energy-systems-catapult) (es.catapult.org.uk)<br>Specialists in Net Zero energy innovation, supporting clean tech innovators and shaping the future energy system across various sectors | Research Services | 🇬🇧 Birmingham | 273 | 2015 |
| 17 | [Virgin StartUp](https://www.tamtam.ai/c/virgin-startup) (virginstartup.org)<br>Offers funding up to 25k per co-founder, provides a community platform for connection and learning, and hosts free monthly events to inspire and network with other founders. | Financial Services | 🇬🇧 London | 250 | 2013 |
| 18 | [Siya](https://www.tamtam.ai/c/siya) (siya.tech)<br>Siya Tech is a startup studio specializing in MVP and Full Stack Development, Startup Identity Design, and Growth strategies for tech startups | IT Services and IT Consulting | 🇬🇧 London | 223 | 2016 |
| 19 | [Transport Systems Catapult](https://www.tamtam.ai/c/transport-systems-catapult) (cp.catapult.org.uk)<br>Driving Intelligent Mobility by promoting emerging technologies for smarter, greener, and more efficient transportation globally, with a focus on collaboration and innovation | Truck Transportation | 🇬🇧 Milton Keynes | 219 | 2013 |
| 20 | [Satellite Applications Catapult](https://www.tamtam.ai/c/satellite-applications-catapult) (sa.catapult.org.uk)<br>An innovative technology company empowering businesses with space-based solutions, driving growth in the global space market with a dynamic team | Defense and Space Manufacturing | 🇬🇧 Didcot | 203 | 2012 |
| 21 | [UD](https://www.tamtam.ai/c/ud) (udmusic.org)<br>UD nurtures and supports Black and culturally diverse artists, providing industry-led events, artist development, and employment support programs to foster excellence and opportunities | Musicians | 🇬🇧 London | 184 | 2000 |
| 22 | [Oxford University Innovation](https://www.tamtam.ai/c/oxford-university-innovation) (innovation.ox.ac.uk)<br>A technology transfer organization supporting University of Oxford staff and students in maximizing research impact for social and economic benefit | Investment Management | 🇬🇧 Oxford | 183 | 1987 |
| 23 | [StartupLanes](https://www.tamtam.ai/c/startuplanes) (startuplanes.com)<br>Provides comprehensive services from idea to IPO for startups, including legal, financial, marketing, and funding, reducing costs and increasing revenue across 15 countries. | Financial Services | 🇬🇧 Edgware | 172 |  |
| 24 | [Elevator](https://www.tamtam.ai/c/elevator) (linktr.ee)<br>The company supports the start-up and growth of businesses in Scotland through Business Gateway services and various accelerator programs in different sectors | Professional Training and Coaching | 🇬🇧 Bridge of Don | 153 |  |
| 25 | [NATO DIANA](https://www.tamtam.ai/c/nato-diana) (diana.nato.int)<br>Locates, accelerates dual-use innovation, provides technology developers with resources, networks, expertise to address critical defense and security challenges, creates a peaceful, resilient future. | Defense and Space Manufacturing | 🇬🇧 London | 147 | 2022 |
| 26 | [Rainmaking](https://www.tamtam.ai/c/rainmaking) (rainmaking.io)<br>An innovation and venture development firm that partners with corporations and entrepreneurs to create, accelerate, and scale new businesses globally | Technology, Information and Internet | 🇬🇧 London | 123 | 2006 |
| 27 | [Oxford Innovation](https://www.tamtam.ai/c/oxford-innovation) (oxfordinnovation.co.uk)<br>Supporting economic growth by providing business advice, finance, and space for entrepreneurs to innovate, collaborate, and raise the necessary funds for growth | Business Consulting and Services | 🇬🇧 Oxford | 115 | 1987 |
| 28 | [KERB](https://www.tamtam.ai/c/kerb) (kerbfood.com)<br>Incubating and accelerating innovative street food businesses in London, bringing amazing food, talented people, and professional practices to transform city spaces and venues | Food and Beverage Services | 🇬🇧 London | 102 | 2012 |
| 29 | [Outlier Ventures](https://www.tamtam.ai/c/outlier-ventures) (outlierventures.io)<br>A leading Open Metaverse accelerator program funding and supporting over 100 Web3 startups annually, focused on DeFi, NFTs, and blockchain infrastructure | Venture Capital and Private Equity Principals | 🇬🇧 London | 101 | 2014 |
| 30 | [Health Innovation Kent Surrey Sussex](https://www.tamtam.ai/c/health-innovation-kent-surrey-sussex) (healthinnovation-kss.com)<br>Facilitating partnerships between healthcare organizations, academia, industry, and local authorities to drive innovation, improve health outcomes, and foster economic growth | Hospitals and Health Care | 🇬🇧 Crawley | 95 | 2013 |
| 31 | [Founders Factory](https://www.tamtam.ai/c/founders-factory) (foundersfactory.com)<br>Founders Factory builds and funds startups with support, access to industry leaders, and operational expertise for high-growth companies across various sectors | Technology, Information and Internet | 🇬🇧 London | 94 | 2015 |
| 32 | [Infosec Ventures](https://www.tamtam.ai/c/infosec-ventures) (infosecventures.com)<br>Incubates and scales cyber security innovators, solving inefficiencies, addressing big problems, and delivering high return on investment for customers. | Computer and Network Security | 🇬🇧 London | 94 |  |
| 33 | [Tomorrow London](https://www.tamtam.ai/c/tomorrow-london) (tomorrowltd.com)<br>Fashion incubator providing sales, financial, and operational services for international brands through global showrooms, digital marketplaces, and distribution platforms in key fashion markets. | Retail Apparel and Fashion | 🇬🇧 London | 92 | 2011 |
| 34 | [The Lightning Group](https://www.tamtam.ai/c/the-lightning-group) (founderandlightning.com)<br>Helps founders, startups, investors, and corporates build and scale ventures with product, talent, capital, and AI capability at the core. | Technology, Information and Internet | 🇬🇧 London | 80 | 2015 |
| 35 | [Imperial College Health Partners](https://www.tamtam.ai/c/imperial-college-health-partners) (imperialcollegehealthpartners.com)<br>Specializing in healthcare innovation, Imperial College Health Partners collaborates with experts to address challenges and spread innovation across the health sector | Hospitals and Health Care | 🇬🇧 London | 71 | 2012 |
| 36 | [Barclays Innovation Hub powered by Eagle Labs](https://www.tamtam.ai/c/barclays-innovation-hub-powered-by-eagle-labs) (uk.barclays)<br>Global fintech ecosystem facilitating innovation and growth in financial services through physical and virtual locations, events, mentoring, and digital fintech programs | Financial Services | 🇬🇧 London | 58 | 2015 |
| 37 | [Excelledia Ventures](https://www.tamtam.ai/c/excelledia-ventures) (excellediaventures.com)<br>The company provides a range of enterprise solutions, invests in technology advancements, and supports startups in building and scaling ventures across various sectors | IT Services and IT Consulting | 🇬🇧 Leeds | 56 | 2018 |
| 38 | [Indie](https://www.tamtam.ai/c/indie) (indie.tech)<br>Startup studio specializing in developing brand platforms in music and media tech Focused on creating innovative solutions in the industry | Software Development | 🇬🇧 London | 47 |  |
| 39 | [Wee Tattie Studios](https://www.tamtam.ai/c/wee-tattie-studios)<br>A Scotland-based game studio collaborating with developers globally to create innovative gaming experiences and supporting emerging game developers | Computer Games | 🇬🇧 Dundee | 42 | 2024 |
| 40 | [NBT (Next Big Thing)](https://www.tamtam.ai/c/nbt-next-big-thing) (nbtdigital.com)<br>A global growth consultancy firm with strategic partnerships, offering services, training, and products to startups, scaleups, and enterprises worldwide | Business Consulting and Services | 🇬🇧 London | 39 | 2015 |
| 41 | [Plus X Innovation](https://www.tamtam.ai/c/plus-x-innovation) (plusxinnovation.com)<br>The company creates collaborative workspaces and offers support to businesses focused on driving positive impact through innovative programs and events | Leasing Non-residential Real Estate | 🇬🇧 London | 36 |  |
| 42 | [Seraphim Space](https://www.tamtam.ai/c/seraphim-space) (seraphim.vc)<br>Specialist investor in SpaceTech, supporting over 100 SpaceTech companies globally, making it the most prolific SpaceTech investment group. | Venture Capital and Private Equity Principals | 🇬🇧 London | 33 | 2016 |
| 43 | [Coinweb Labs](https://www.tamtam.ai/c/coinweb-labs) (coinweblabs.io)<br>A platform solving blockchain issues by creating collaborative, connected, and accessible technology for all Contact hello@coinwebio or visit wwwcoinwebio | Blockchain Services | 🇬🇧 London | 31 | 2018 |
| 44 | [FinTech Innovation Lab London](https://www.tamtam.ai/c/fintech-innovation-lab-london) (fintechinnovationlab.com)<br>The FinTech Innovation Lab London is an accelerator program fostering collaboration between financial institutions and tech companies to develop innovative solutions | Financial Services | 🇬🇧 London | 29 | 2011 |
| 45 | [Memcrab](https://www.tamtam.ai/c/memcrab) (memcrab.com)<br>A turnkey Web&App solution provider specializing in eCommerce, business revenue maximization, and digital solutions for retailers, educational institutions, fintech, and banking companies | Software Development | 🇬🇧 London | 28 | 2010 |
| 46 | [Tenity (prev. Hackquarters)](https://www.tamtam.ai/c/tenity-prev-hackquarters) (tenity.com)<br>A startup accelerator and corporate innovation partner in London & Istanbul, supporting disruptive technologies by providing talent, support, and experience Apply/invest/support for collaboration | Technology, Information and Internet | 🇬🇧 London | 28 | 2015 |
| 47 | [Future Worlds](https://www.tamtam.ai/c/future-worlds) (futureworlds.com)<br>On-campus startup accelerator helping entrepreneurs with ideas, providing advice, funding, global showcasing, networking, and inspiring next-generation entrepreneurs in a West Coast US culture. | Higher Education | 🇬🇧 Southampton | 26 | 2015 |
| 48 | [Startup Foundry](https://www.tamtam.ai/c/startup-foundry) (org.uk)<br>A leading startup studio offering resources and expertise to help entrepreneurs build, launch, and grow successful startups through various services | Software Development | 🇬🇧 London | 25 |  |
| 49 | [The49](https://www.tamtam.ai/c/the49) (the49.com)<br>The49 is an innovative and transformative company that focuses on internet-based projects, working with talented individuals and partnering with impactful initiatives | Technology, Information and Media | 🇬🇧 London | 24 | 2018 |
| 50 | [University of Southampton Science Park](https://www.tamtam.ai/c/university-of-southampton-science-park) (science-park.co.uk)<br>A leading science park in Hampshire offering high-quality office and lab space in a prime location, recognized as a top commercial landlord | Leasing Non-residential Real Estate | 🇬🇧 Southampton | 23 | 1983 |

## 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 Nov 11, 2026.

## More company lists in the United Kingdom

- [The largest companies in the United Kingdom](https://www.tamtam.ai/l/largest-companies-united-kingdom) (36,548)
- [Multinational companies in the United Kingdom](https://www.tamtam.ai/l/multinational-companies-united-kingdom) (7,458)
- [Financial services firms in the United Kingdom](https://www.tamtam.ai/l/financial-services-firms-united-kingdom) (3,711)
- [Financial Services companies in the United Kingdom](https://www.tamtam.ai/l/financial-services-companies-united-kingdom) (3,696)
- [Retail chains in the United Kingdom](https://www.tamtam.ai/l/retail-chains-united-kingdom) (3,289)
- [Professional services firms in the United Kingdom](https://www.tamtam.ai/l/professional-services-firms-united-kingdom) (2,706)
- [Software Development companies in the United Kingdom](https://www.tamtam.ai/l/software-development-companies-united-kingdom) (2,600)
- [Manufacturers in the United Kingdom](https://www.tamtam.ai/l/manufacturers-united-kingdom) (2,159)
- [Companies with in-house R&D in the United Kingdom](https://www.tamtam.ai/l/r-and-d-companies-united-kingdom) (1,930)
- [IT Services and IT Consulting companies in the United Kingdom](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-united-kingdom) (1,722)
- [Retail companies in the United Kingdom](https://www.tamtam.ai/l/retail-companies-united-kingdom) (1,596)
- [IT services companies in the United Kingdom](https://www.tamtam.ai/l/it-services-companies-united-kingdom) (1,583)
- [Hotel and hospitality groups in the United Kingdom](https://www.tamtam.ai/l/hospitality-groups-united-kingdom) (1,461)
- [Companies with a mobile app in the United Kingdom](https://www.tamtam.ai/l/companies-with-mobile-app-united-kingdom) (1,411)
- [Consulting firms in the United Kingdom](https://www.tamtam.ai/l/consulting-firms-united-kingdom) (1,298)
- [E-commerce companies in the United Kingdom](https://www.tamtam.ai/l/ecommerce-companies-united-kingdom) (1,246)
- [Hardware manufacturers in the United Kingdom](https://www.tamtam.ai/l/hardware-companies-united-kingdom) (1,239)
- [Family-owned companies in the United Kingdom](https://www.tamtam.ai/l/family-owned-companies-united-kingdom) (1,224)
- [Hospitality companies in the United Kingdom](https://www.tamtam.ai/l/hospitality-companies-united-kingdom) (1,204)
- [Critical infrastructure operators in the United Kingdom](https://www.tamtam.ai/l/critical-infrastructure-operators-united-kingdom) (1,195)
- [Wellness and Fitness Services companies in the United Kingdom](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-united-kingdom) (1,151)
- [Retail Apparel and Fashion companies in the United Kingdom](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-united-kingdom) (1,085)
- [Subscription businesses in the United Kingdom](https://www.tamtam.ai/l/subscription-businesses-united-kingdom) (1,077)
- [Distributors and wholesalers in the United Kingdom](https://www.tamtam.ai/l/distributors-and-wholesalers-united-kingdom) (1,060)

## The same list elsewhere in United Kingdom

- [Startup incubators and accelerators in London](https://www.tamtam.ai/l/incubators-and-accelerators-london) (48)

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Source: https://www.tamtam.ai/l/incubators-and-accelerators-united-kingdom