Directory

Adeline Arts & Science

VCOtherAIBritish

London family office backing pre-seed to Series A startups across technology, deep science, and the arts; average cheque £150k; runs the Founders' Floor co-working hub in Holborn.

Adendra Therapeutics

StartupBiotech & Life SciencesBritish

Immunotherapy company leveraging dendritic-cell biology to develop therapeutics for solid cancers and autoimmune disease.

Airspeed

StartupAISaaSBritish

AI-native agent platform that turns customer conversations into automated CRM updates, deal intelligence and sales coaching for revenue teams.

Aisy

StartupCybersecurityAIBritish

AI-native, attacker-driven vulnerability prioritisation platform that turns overwhelming alert volumes into clear, business-context risk rankings for security teams.

Alchemy Partners

PEOtherBritish

Alchemy Partners is a London-based private equity and special situations investment firm founded in 1997, specialising in distressed debt, capital solutions, and equity investments across Europe. The firm has completed over 230 transactions and advises approximately £2.8 billion of assets across 16 European countries.

All3

ScaleupProptechAIForeign

Construction technology company building an integrated stack of AI design software, robotised off-site factories and an autonomous legged on-site assembly robot (Mantis) to industrialise construction delivery.

Ampere

ScaleupFinanceBritish

All-in-one financial services platform for UK-registered businesses, offering business current accounts, GBP and EUR accounts, cards, low-cost FX, merchant accounts, invoicing, business loans and commercial mortgages.

Amplifying Life Ltd

StartupBiotech & Life SciencesConsumerBritish

London-based health science startup researching photobiomodulation (therapeutic light) and building direct-to-consumer red light therapy hardware, incorporated in 2024.

Angels4Angels

VCOtherBritish

Angels4Angels is a Cheltenham-based angel investment group that funds early-stage entrepreneurial ventures on behalf of high-net-worth investor syndicates. The group provides a free service to investors seeking equity returns from backing start-up and early-stage businesses, acting as operating partners to facilitate the investment process.

Animal Health Angels

VCBiotech & Life SciencesBritish

UK angel investor network connecting entrepreneurs with experienced animal health professionals to fund early-stage animal health and veterinary businesses.

Anvil Partners

VCEdtechBritish

Anvil Partners LLP is a London-based angel investment firm incorporated in 2003, investing in a broad range of early-stage businesses with a concentration in the biomedical and life sciences space as well as technology companies. The firm has participated in SEIS and EIS funding rounds and is a member of the UK Business Angels Association.

Apater Capital

PEAIFinanceVCBritish

Apater Capital is a Leeds-based private equity and venture capital firm incorporated in November 2019, describing itself as the modern iteration of private equity. The firm targets investments in fourth industrial revolution sectors including social commerce, fintech, artificial intelligence, augmented reality and transformative health technology.

Apiar

StartupOtherBritish

British watchmaker using metal additive manufacturing (3D printing) and generative design to produce lightweight, complex-geometry luxury timepieces in small batches.

Apoha

StartupAIBiotech & Life SciencesBritish

Apoha builds the molecular data layer for AI, measuring how matter behaves to power discovery of medicines, food ingredients and new materials via its Liquid State Intelligence platform.

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.

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'.

Artificial Societies

StartupAIBritish

Synthetic-persona simulation platform: builds networks of AI personas to simulate how target audiences respond to campaigns, products and messaging.

Arāya Ventures

VCFinanceAIBritish

London-based early-stage venture capital firm founded in 2022, investing pre-seed and seed across AI, healthtech, fintech, commerce, and future of work.

Ascension

VCSaaSAIBritish

Ascension is a London-based pre-seed and seed-stage venture capital firm, founded in 2015, that backs ambitious technology founders across the UK, Europe, and North America. It is one of the most active seed-stage investors in London and invests through generalist and thesis-driven funds, including impact-focused vehicles targeting social inequality and the cost of living crisis. The firm has backed over 300 portfolio companies since inception.

Aspirity Partners

PEFinanceAIBritish

London-based pan-European private equity firm targeting growth buyouts in Financial Technology & Services and Enterprise Technology & Connectivity Services, investing €50–150m per deal.

Atheni

StartupAISaaSBritish

London-based AI adoption platform delivering personalised, role-specific guidance to help businesses embed tools like ChatGPT, Claude, and Copilot into daily workflows.

Augur

StartupDefenceAIBritish

UK sovereign sensor-intelligence platform that turns existing camera infrastructure into a real-time perception engine for security, operational optimisation, behavioural analytics and critical-infrastructure monitoring, with privacy-by-design controls and no facial recognition requirement.

Avealto

ScaleupSpaceBritish

Develops high-altitude airship platforms (HAPS/Wireless Infrastructure Platforms) carrying telecom payloads for 4G/5G, VSAT and maritime connectivity from the stratosphere.

Avigen

StartupBiotech & Life SciencesBritish

Avidity-based contract research organisation (CRO) for immunotherapy and cell-therapy R&D, using a proprietary live-cell microfluidic platform to measure immune-cell binding strength and rank, validate and select higher-confidence therapeutic candidates.