Directory

FluidStack

ScaleupAIForeign

On-demand GPU cloud delivering high-performance compute clusters, orchestration and monitoring for AI training and inference.

Flybox

StartupAgritechFoodtechBritish

Builds modular, end-to-end insect (black soldier fly) farms converting organic waste into high-protein animal feed.

Flywire

CorporateFinanceDeep TechForeign

Flywire's payment platform, global payment network and industry-specific software help organizations around the world handle complex payment challenges.

Fnality

ScaleupFinanceBritish

Blockchain-based wholesale payments and settlement infrastructure for institutions using tokenised central bank money.

Focal

StartupAIForeign

Real-Time Shelf Insights And Automation Every product, every shelf, every hour to improve product availability, reduce waste, and optimize workforce efficiency. Get the white paper: The ROI of Shelf AI […]

Fonoa

ScaleupFinanceSaaSForeign

Fonoa is a Dublin-headquartered tax technology company providing an AI-driven platform that automates global indirect tax compliance, covering tax ID validation, tax calculation, e-invoicing and tax return filing across 100+ jurisdictions. It serves large digital businesses such as Uber, Netflix, Canva and Booking.com, and in 2026 raised a $110M Series C and acquired PwC's Indirect Tax Edge platform.

Fora

CoworkingOtherBritish

Fora is the consumer-facing flexible workspace brand of The Office Group, operating over 60 distinctive coworking and serviced office locations across London, Cambridge, Leeds, and Reading. Originally incorporated in 2015 and backed by Brockton Capital, Fora merged with The Office Group in 2022 and became the unified brand for all TOG locations in 2023.

Forest

ScaleupClimateConsumerBritish

Sustainable shared electric-bike scheme for London; tree-shaped e-bikes offering free daily minutes funded by an in-app advertising platform.

Form Ventures

VCFinanceAIBritish

London-based early-stage VC fund investing up to £1m in startups disrupting or building regulated markets, from pre-seed through pre-Series A.

Formlabs

ScaleupDeep TechForeign

Formlabs is the largest supplier of professional stereolithography (SLA) and selective laser sintering (SLS) 3D printers in the world.

Forter

ScaleupCybersecurityE-commerceForeign

AI powered fraud, abuse, and payment decisions — so your best customers feel less friction, and you leave no revenue behind.

Fortinet

CorporateCybersecurityForeign

Fortinet delivers cybersecurity everywhere you need it. We secure the entire digital attack surface from devices, data, and apps and from data center to home office.

Forward Fooding Hub

CoworkingFoodtechAgritechEcosystem Bodies, Catapults & InstitutionsCommunityBritish

The Forward Fooding FoodTech Innovation Hub is London's first shared workspace dedicated to AgriFoodtech businesses, hosted within The Mills Fabrica at King's Cross. Operated by Forward Fooding (formerly CrowdFooding, founded 2014 by Alessio D'Antino; rebranded and hub launched June 2018), it provides co-working space, networking events, equity-free business growth programmes, and access to Forward Fooding's global agrifoodtech intelligence platform, connecting food-tech startups with corporate partners, investors, and industry experts.

Forward Networks

ScaleupCybersecuritySaaSForeign

Forward's flagship software, Forward Enterprise, delivers the best digital twin technology to the world's largest networks. Multi-vendor fully-scalable

Forward Partners

VCAIConsumerBritish

Forward Partners was a London-based early-stage venture capital firm founded in 2013, focused on seed and pre-seed investments in UK startups across AI, marketplaces, and e-commerce. The firm built a portfolio of over 70 companies including Cazoo and Zopa, before being acquired by Molten Ventures in a £41 million all-share deal that became effective in March 2024.

Foundation Ventures

Incubator / AcceleratorCrypto & Web3CommunityBritish

Foundation Ventures is a London-based advisory and acceleration firm that helps Web3 and blockchain founders with legal, accounting, tokenomics and go-to-market support, connecting them to investors and partners through networking events and demo days.

Foundation for Science and Technology

Ecosystem Bodies, Catapults & InstitutionsOtherBritish

The Foundation for Science and Technology is a UK charity that provides an impartial platform for debate of policy issues with a science, research, technology, or innovation element. Established in 1977, it convenes discussion events, publishes a journal, and hosts a weekly podcast, bringing together parliamentarians, civil servants, industrialists, and researchers.

Founder Nation

CommunityOtherForeign

A founder community to help you build faster, better.

FounderCatalyst

StartupLegalFinanceProfessional ServicesBritish

FounderCatalyst helps UK startups raise investment, manage SEIS/EIS, and set up share option schemes with expert guidance. Fixed pricing. Try free.

Founders Factory

Incubator / AcceleratorOtherAIVCBritish

Founders Factory is a venture studio and startup accelerator that co-builds and funds early-stage startups alongside leading global corporate partners. Founded in 2015 by Brent Hoberman and Henry Lane Fox, it provides capital, operational support from a 60+ person operator team, and access to corporate networks across fintech, health, climate, deep tech, and industrials, with a portfolio of over 450 companies across five continents.

Founders Forum

Ecosystem Bodies, Catapults & InstitutionsOtherCommunityBritish

Founders Forum Group is a global community and group of businesses dedicated to empowering entrepreneurs throughout their journeys, uniting founders, investors, CEOs and government leaders through invite-only forums in London, New York, Berlin and Singapore. The organisation co-hosts London Tech Week and runs programmes including Rising Stars, which connects promising founders with investors, as well as offering professional services spanning legal, HR, communications and investment support.

Founders Law

Professional ServicesLegalBritish

Founders Law is a London-based law firm providing hands-on legal support to high-growth companies across corporate administration, fundraising, employment, data privacy, commercial agreements, and specialist areas including AI, crypto, and fintech. Originally founded in 2019 as Chronos Law, the firm rebranded to Founders Law in 2022 following investment by Founders Forum Group. It is regulated by the Solicitors Regulation Authority and also maintains an office in Dubai.

Founders Pledge

Ecosystem Bodies, Catapults & InstitutionsOtherCommunityBritish

Founders Pledge is a global non-profit that enables tech entrepreneurs to commit a share of their personal proceeds from business exits to high-impact charities. It provides evidence-led research, expert philanthropy advice, and grant-making infrastructure to help members direct giving to the world's most pressing problems, with over 2,291 members from 45+ countries having pledged $13.6 billion.

Founders Running Club

CommunityOtherForeign

Community for founders, investors, IT pros, startup enthusiasts plus friends and families, with weekly Running + Networking events and more