Directory

Apolitical

ScaleupEdtechAIBritish

Global learning and networking platform for public servants; government skills, AI/policy training and peer collaboration across 140+ countries.

Apollo Global Management

PEFinanceForeign

Apollo Global Management is a high-growth global alternative asset manager founded in 1990, headquartered in New York City and publicly listed on the NYSE. The firm manages approximately $938 billion in assets under management across private equity, credit and real assets strategies, with offices across North America, Europe and Asia.

Apollo Informal Investment

VCOtherBritish

Apollo Informal Investment is an Edinburgh-based angel syndicate founded in 2013, focused on providing seed investment to early-stage start-ups based in Scotland. The group is sector-agnostic and typically invests between £20,000 and £100,000 per deal, operating on a volunteer-driven basis.

Apollo Research

StartupAI SafetyAIEcosystem Bodies, Catapults & InstitutionsBritish

Technical AI safety organisation focused on reducing risks from scheming/deceptive frontier AI through interpretability research and behavioural model evaluations; also provides pre-deployment auditing services to frontier AI laboratories.

Appcharge

ScaleupGamingFinanceForeign

Appcharge helps mobile game publishers sell in-game items directly to their players with branded web stores, global payments, and gamified offers. Boost profits by 35% and build stronger player loyalty with the fastest-growing DTC platform for mobile games.

Appian

CorporateSaaSAIForeign

Appian is a US-based, NASDAQ-listed enterprise software company providing a low-code platform for process automation, workflow orchestration and AI agent orchestration used by large organisations and governments worldwide.

Apple

CorporateConsumerAIForeign

Apple Inc. is a global technology company headquartered in Cupertino, California, designing and selling consumer electronics (iPhone, Mac, iPad, Apple Watch), software (macOS, iOS), and digital services (App Store, Apple Music, iCloud). It is consistently one of the highest-valued companies in the world and operates a major UK campus at Battersea Power Station in London.

Applied Computing

StartupAISaaSBritish

Applied Computing develops Orbital, a foundation model for process plants, refineries and petrochemical facilities that combines time-series, physics, chemical-engineering and language models to interpret sensor data and simulate operational changes. Founded in 2023 by Callum Adamson and Dr Samyakh Tukra, it operates from London with hubs in Bengaluru and Houston.

Apron

StartupFinanceBritish

Business payments and invoice processing platform helping SMEs and accountants pay suppliers and manage cashflow.

Aptura AI

StartupAIDeep TechBritish

Aptura is a London-founded startup that supplies expert-curated training data and reinforcement-learning environments to AI labs, helping them build and evaluate reliable AI systems for regulated industries such as finance, healthcare and law.

Aqua Security

ScaleupCybersecurityForeign

Full dev-to-prod cloud native security platform on Kubernetes, Docker, OpenShift, Fargate, Lambda, AWS & other container platforms

Aquiline

PEFinanceSaaSVCForeign

Aquiline Capital Partners is a New York and London-based private investment specialist focused on financial services and technology, founded in 2005. The firm operates across private equity, venture and credit strategies, investing in businesses ranging from early-stage to established companies with enterprise values up to $2.5 billion. Aquiline has raised over $3.4 billion in capital commitments across its funds.

Aramco Ventures

VCClimateDeep TechForeign

Aramco Ventures is the corporate venturing arm of Saudi Aramco, managing several billion-dollar venture funds (Sustainability, Digital/Industrial and Prosperity7) that invest globally in early-stage to growth-stage companies with technologies of strategic relevance to Aramco, spanning sustainability, industrial digital tech and diversified sectors outside energy.

Arbeit Studios

CoworkingReal EstateBritish

Arbeit Studios is a London-based creative workspace operator that transforms empty buildings into affordable studio spaces for artists, designers, makers, startups, and small businesses. Managing over 250 units across 19 sites in East and North London boroughs, it maintains very high occupancy rates and also runs galleries and a programme of exhibitions, workshops, and events under its WORK/Series banner.

Arborea

StartupClimateBiotech & Life SciencesBritish

Synthetic-biology company using its patented BioSolar Leaf platform to cultivate photosynthetic microalgae at scale, producing carbon-negative proteins and food ingredients as nature-positive alternatives to conventional food inputs.

Archangels

VCFinanceBritish

Archangels (formerly Archangel Investors Limited) is the longest continuously operating business angel syndicate in the world, established in 1992 and headquartered in Edinburgh. The syndicate invests in early-stage, IP-rich technology and life sciences companies based in Scotland, typically committing £250,000–£2 million per deal. With a network of around 120 members, Archangels has invested over £160 million in innovative Scottish companies.

Archestra

StartupAI SafetyAIBritish

Platform enabling companies to securely use AI agents and connect them to internal data sources safely, with guardrails to 'stop AI agents going rogue'.

Archipelago Ventures

VCClimateDeep TechBritish

Archipelago Ventures is a leading venture capital investor helping to transform material use and build the circular economy of the future.

Architect

StartupAISaaSForeign

Architect adds an AI agent to your website that answers buyer questions instantly and builds live, personalised pages on demand. Add one script and go live in under two minutes.

Ardian

PEOtherForeign

Ardian is a global diversified private markets firm managing or advising approximately $180 billion of assets across private equity, real assets, and credit. Originally founded in 1996 as AXA Private Equity, the firm became fully independent in 2013 following an employee buyout. It operates from offices in Beijing, Frankfurt, Jersey, London, Luxembourg, Milan, New York, Paris, Singapore, and Zurich, with its UK office in Mayfair, London.

Ares

PEOtherReal EstateVCForeign

Ares Management Corporation (NYSE: ARES) is a leading global alternative investment manager with approximately $644 billion in assets under management across credit, private equity, real estate, and infrastructure. Founded in 1997 in Los Angeles, the firm operates from over 60 offices worldwide and serves more than 3,500 institutional investors. Its diversified platform spans mid-market buyouts, infrastructure, real assets, and private credit.

Argyll

CoworkingOtherBritish

Argyll is a premium flexible workspace provider offering serviced private offices, coworking lounges, meeting and event spaces, and virtual office addresses across ten prestigious London neighbourhoods including Mayfair, Belgravia, City of London, and Covent Garden. Founded in 1996, the company is known for its distinctive heritage properties and high-quality service. In 2025 it was acquired by Crosstree Real Estate Partners for approximately £330 million.

Arm

CorporateDeep TechBritish

Arm Holdings is a British semiconductor and software design company headquartered in Cambridge, England, that designs and licences CPU architectures and related intellectual property used in the vast majority of mobile devices and a wide range of computing products globally. The company does not manufacture chips itself but licenses its processor designs to semiconductor partners including Apple, Qualcomm, Samsung, and many others. Arm returned to public markets via a Nasdaq IPO in September 2023 after being owned by SoftBank Group since 2016.

Arondite

ScaleupDefenceAIBritish

Hardware-agnostic AI software ('connective tissue') that links and orchestrates multiple autonomous systems, robots and sensors for safe human-machine teaming in defence/critical industries.