Directory

Marchmont Ventures

VCOtherMediaBritish

Marchmont Ventures is an early-stage venture capital firm founded in 2018 and based at Marchmont House in the Scottish Borders, investing in companies that support sustainability, creativity, the arts, crafts, heritage protection, and land management. The firm backs purpose-driven enterprises and early-stage digital businesses with a long-term investment horizon.

MatchingMind

StartupBiotech & Life SciencesAIBritish

AI-powered matchmaking platform connecting people to peer support and mental health specialists based on lived experience; serves ethnic-minority communities.

Materra

StartupClimateBritish

AgTech company enabling brands to source regenerative cotton by working directly with thousands of farmers in India, providing supply-chain traceability and data tools to decarbonise agricultural commodities.

Mayfair

VCOtherBritish

Mayfair

Maze

StartupCybersecurityAIBritish

Cybersecurity startup deploying autonomous AI agents that investigate and resolve cloud security vulnerabilities, identifying exploitable risks and remediating automatically.

Mealia

StartupConsumerAIBritish

AI grocery assistant generating personalised, budget-aware meal plans from supermarket prices; aimed at food-insecure households.

Meltwind Advisory

VCBiotech & Life SciencesBritish

Cambridge-based investment advisory firm founded by Abcam's Jonathan Milner, backing early-stage life science tools, therapeutics, and medtech companies.

Mendee

StartupAIBritish

Social enterprise with AI hub 'SiBot' giving refugees multilingual support and helping non-profits with language and digital literacy.

MetaSenZ

StartupClimateBritish

King's College London nano-optics spin-out developing ultrasensitive hydrogen gas sensors for real-time leak detection and safer production, transport and storage across the hydrogen value chain.

Metris Energy

StartupClimateAIBritish

AI-powered SaaS platform (MetrisOS) for designing, managing, and monetising commercial rooftop solar projects end-to-end, including power purchase agreement billing.

Montreux Capital Management

PEOtherBritish

Montreux Capital Management is a boutique alternative investment firm founded in 2010 and based in Surrey, United Kingdom. It serves as investment adviser to the Montreux Healthcare Fund, which deploys a buy-and-build strategy to acquire and grow specialist care businesses across the United Kingdom, with a focus on adult care for those with acquired brain injuries, spinal cord injuries, and learning disabilities.

Mutable Tactics

StartupDefenceAIBritish

UK defence-tech company building AI orchestration systems that coordinate heterogeneous robotic and drone platforms for contested battlefield environments.

Mykor

StartupClimateProptechBritish

Bristol biotech startup growing mycelium-based low-carbon insulation panels and construction systems from agricultural and industrial waste.

NEX Health Intelligence

StartupBiotech & Life SciencesAIBritish

Imperial College London spin-out building an AI infection intelligence platform that predicts drug-resistant infection spread in hospitals from patient contact-network data.

NSLondon

StartupOtherBritish

NSLondon

NW Brown Ventures

VCOtherBritish

NW Brown Ventures was the venture capital investment arm of NW Brown & Co, a Cambridge-based wealth management and financial advisory firm founded in 1974. The venture arm made a small number of early-stage investments in UK technology and life sciences companies, with its last recorded investment in 2008. The parent company, NW Brown & Co, was acquired by Brown Shipley in 2019 and the venture arm appears to have been dormant for many years prior.

Neptune Investment Management

PEFinanceOtherBritish

Neptune Investment Management was an independent UK-based active fund manager founded in 2002 in Hammersmith, West London, offering a range of global, income, regional, and emerging market funds. The firm was acquired by Liontrust Asset Management in October 2019, with all Neptune funds subsequently rebranded under the Liontrust name and its investment team absorbed as the Liontrust Global Equity team. Neptune no longer exists as an independent entity.

Network B2B

StartupOtherBritish

Network B2B

Networx London

StartupOtherBritish

Networx London

NewOrbit

StartupSpaceBritish

UK startup building satellites for very low Earth orbit (VLEO) using air-breathing propulsion, targeting global connectivity and Earth observation.

Nexus Additive

StartupAIBritish

AI software that cuts the cost of qualifying metal 3D-printed parts by combining real-time process monitoring with predictive quality intelligence, targeting qualification cost reductions of over 50% for aerospace, medical and energy manufacturers.

Nuclide Therapeutics

ScaleupBiotech & Life SciencesBritish

Radiotheranostics spinout developing ALDH1A1-targeted radioactive drugs to detect and eliminate therapy-resistant cancer cells in lung and ovarian cancers.

OG Venture Partners

VCSaaSAIForeign

O.G. Venture Partners is a venture capital fund backed by Eyal Ofer's Ofer Global, investing primarily at Series B and C stages in fast-growing technology startups. The fund focuses on sectors including gaming, logistics, AI, and SaaS, with particular strength in Israeli and global technology companies. It manages multiple funds totalling over $400 million, with a global office in London and an Israeli office in Tel Aviv.

Odysseus Investments

VCFinanceReal EstatePEBritish

Odysseus Investments is the venture capital and private equity arm of Reech Corporations Group, founded in 2015 and publicly launched in 2020, and headquartered in London. The firm focuses on driving the digitisation of traditional finance, insurance, and real estate sectors, partnering with businesses that have proven models set to benefit from technology, financial structuring, or scaling expertise.