Directory

9fin

ScaleupFinanceAIBritish

AI-native platform for debt-capital-markets data and intelligence (leveraged finance, high-yield, distressed, private credit).

A2E Industries

PEOtherBritish

A2E Industries Limited is a Manchester-based private investment vehicle incorporated in 2000, managing the personal investment funds of its founder in a style akin to a traditional merchant bank. The firm provides risk capital and corporate finance activity to investee companies across industrial and manufacturing sectors.

AAIF Community London

CommunityAIForeign

Join 70,000+ ML engineers sharing knowledge, solving real MLOps problems, networking, and growing together. Learn best practices, meet peers, and advance your career.

ABHI

Ecosystem Bodies, Catapults & InstitutionsBiotech & Life SciencesDeep TechBritish

The Association of British HealthTech Industries (ABHI) is the UK's leading industry association for the health technology sector, representing approximately 400 members who account for around 80% of the UK HealthTech sector by value. Formed in 1988, it supports manufacturers of medical devices, diagnostics, surgical equipment, and digital health solutions in delivering products and services that help people live healthier lives.

ABPI

Ecosystem Bodies, Catapults & InstitutionsBiotech & Life SciencesDeep TechBritish

The Association of the British Pharmaceutical Industry (ABPI) is the UK trade body representing companies that research, develop and supply medicines, tracing its origins to the 'Drug Club' founded in 1891 and formally established as the ABPI in 1948. Its approximately 120 member companies supply more than 80 per cent of the medicines prescribed through the NHS, and the ABPI represents their interests to government, regulators and NHS bodies. It also sets and administers industry ethical standards through the Prescription Medicines Code of Practice Authority.

ACE

GovernmentCybersecurityAIBritish

The Accelerated Capability Environment (ACE) is a Home Office unit that takes an innovative, industry-led approach to solving technology and data challenges for UK public sector agencies, particularly in law enforcement and national security. Founded in 2017 within the Office for Security and Counter Terrorism (OSCT), it operates via the Vivace community of over 180 private sector and academic organisations, primarily SMEs and start-ups. It has since expanded beyond the Home Office to support wider government partners.

ACE & Company

PEFinanceAIVCForeign

ACE & Company is a Geneva-headquartered private equity and venture capital group founded in 2005, with over $2 billion in assets under management. The firm operates through two lines: ACE Ventures, an early-to-late stage technology VC backing fintech, climate tech, deep tech, and AI founders; and ACE Private Equity, focused on lower mid-market buyouts and secondary investments. The firm has offices in Geneva, Zurich, New York, London, and Cairo.

ACF Investors

VCFinanceBritish

ACF Investors (formerly Angel CoFund) is a £100 million UK venture capital fund that co-invests alongside syndicates of sector-smart angel investors to support early-stage businesses with strong growth potential. Launched in 2011 and initially backed by the British Business Bank, the fund makes equity investments of between £100,000 and £1 million into companies across the UK. ACF Investors operates from offices in Sheffield and London.

ADS Group

Ecosystem Bodies, Catapults & InstitutionsDefenceSpaceBritish

ADS Group is the UK trade association representing and advancing leadership across the aerospace, defence, security, and space sectors. Formed in 2009 through the merger of the Society of British Aerospace Companies, the Defence Manufacturers Association, and the Association of Police and Public Security Suppliers, it represents over 1,700 member companies. ADS operates UK-wide and maintains an office in Toulouse, France.

AEA Investors

PEFinanceForeign

AEA Investors is a leading global middle-market private equity firm founded in 1968 by the Rockefeller, Mellon, and Harriman family interests together with S.G. Warburg & Co. With approximately $19 billion in assets under management, the firm focuses on leveraged buyouts, growth equity, and private debt investments across industrial, consumer, healthcare, and business services sectors, with offices in New York, Stamford, San Francisco, London, Munich, and Shanghai.

AFBE-UK

CommunityOtherBritish

AFBE-UK (Association for Black and Minority Ethnic Engineers) is a UK company limited by guarantee (registered no. 6570439) founded in 2007 that supports ambitious students and engineering professionals from Black and minority ethnic backgrounds. It runs over 100 events annually, operates a mentoring programme with 300 mentors, and has reached more than 20,000 beneficiaries since inception.

AI After 5

CommunityAIForeign

The global community for women building with AI through practical sessions, deliberate connections, live events and public opportunities.

AI Pilled

CommunityAIForeign

A series of building and sharing sessions for builders and organisations to harness the power of AI. Prescribing AI pills to make work and life less mundane, more enjoyable.

AI Score

StartupAI SafetyCybersecurityBritish

AI Score is a London-based startup building an AI governance platform that gives enterprises real-time visibility into how generative and agentic AI is used, helping risk, legal and compliance teams manage adoption and control exposure.

AI Signals

StartupAIBritish

AI Signals

AI Standards Hub

Ecosystem Bodies, Catapults & InstitutionsAIAI SafetyBritish

The AI Standards Hub is a UK initiative dedicated to knowledge sharing, community building, and strategic research around the standardisation of AI technologies. It is a partnership led by the Alan Turing Institute with the British Standards Institution (BSI) and the National Physical Laboratory (NPL), supported by the UK Government's Department for Science, Innovation and Technology. Launched in October 2022, the Hub works to increase multi-stakeholder participation in AI standards development and facilitate international engagement.

AI for Growth

Ecosystem Bodies, Catapults & InstitutionsAIAI SafetyCommunityBritish

A free, practical UK initiative helping small businesses adopt AI. Join the free SME Community, learn from real businesses, get honest tool recommendations.

AI for the rest of us London

CommunityAIBritish

A community organisation focused on democratising artificial intelligence knowledge and access for a broad audience beyond specialist technologists.

AISI

GovernmentAI SafetyAIBritish

The AI Security Institute (AISI) is the UK government's research body dedicated to understanding and mitigating the risks posed by advanced AI systems. Operating within the Department for Science, Innovation and Technology, it conducts technical safety research, evaluates frontier AI models, and works with governments and AI developers to develop safeguards. Originally established in November 2023 as the AI Safety Institute, it was renamed AISI in February 2025.

AKQA

Professional ServicesOtherForeign

AKQA is a design and innovation company receiving recognition for the influence of our work and its ability to make a positive difference in people’s lives.

AMD

CorporateAIForeign

Advanced Micro Devices (AMD) is a global semiconductor company headquartered in Santa Clara, California, designing and manufacturing CPUs, GPUs, FPGAs, and embedded processors for computing, gaming, data centres, and AI workloads. Its product lines include Ryzen processors, Radeon graphics cards, and EPYC server CPUs. The company has a significant UK design office at Cambridge Science Park.

AMFG

ScaleupSaaSBritish

SaaS workflow and MES platform for low-volume, high-mix manufacturers, covering quoting, production scheduling, shop-floor control and post-processing management; customers include HP, Volvo and L'Oréal.

ARIA

GovernmentOtherAIGrantmakerBritish

ARIA is a UK government-backed R&D funding agency, formally established in January 2023 as a non-departmental public body sponsored by the Department for Science, Innovation and Technology. It funds high-risk, high-reward research programmes across areas such as AI safety, climate resilience, robotics, and biotechnology, with an £800 million government endowment.

ARQ

ScaleupFinanceCrypto & Web3Foreign

ARQ opens the world