Clerkenwell & Farringdon is home to 37 of London's best tech companies, led by Fintech (11).

Pet insurance provider, formerly Bought By Many, selling cover for dogs and cats in the UK.

Bank payment and direct debit network for recurring and one-off business payments.

Digital business account for small businesses, offering business accounts, debit cards, currency exchange, invoicing and bulk payments through an app.

Money app that automates saving and investing for users in the UK and several EU countries.

Account-to-account payment infrastructure that lets banks, fintechs and payment companies offer Pay by Bank, variable recurring payments and payouts through one API.

Accounting firm for small businesses where AI agents do the bookkeeping and qualified accountants sign off.

APIs linking small business accounting and banking data to banks and lenders for faster credit and advice.

Cuvva sells temporary and flexible monthly car insurance through a mobile app.

SaaS platform that automates data reconciliation and controls for banks, asset managers and insurers.

Digital wealth manager offering managed portfolios, ISAs, pensions and DIY investing to retail investors in the UK and Italy.

Software that automates regulatory reporting and capital calculations for banks and building societies.

Trains EDEN biological AI models on proprietary natural-world genomic data to design new medicines.

AI-native CRM that builds itself around a company's data for go-to-market teams.

AI-powered legal platform and law firm giving consumers and small businesses affordable access to vetted lawyers.

Billing platform that helps AI agent companies price, track costs and prove value to customers.

Uses AI to design advanced materials and data centre cooling hardware, and is expanding into energy and semiconductors.

Makes DERM, a Class III CE marked AI device that triages skin cancer referrals for the NHS and insurers.

AI-native contract management platform for drafting, agreeing and managing contracts end to end.

Generative AI platform that helps companies and nonprofits write bids, proposals, grants and RFP responses.

AI agents that write, check and optimise marketing copy for email, SMS, push and paid social (formerly Phrasee).

AI platform that helps companies find, qualify and bid for public sector contracts.

Peer-to-peer fashion resale app where people buy and sell secondhand clothing, now owned by eBay.

Online platform for personalised greeting cards and gifts, operating the Moonpig and Greetz brands.

Software for estate and letting agencies, covering sales CRM, lettings, property management, client accounts and consumer engagement tools.

Privacy-first audience data platform that lets publishers and advertisers target ads without third-party cookies.

Kitt provides managed offices in London, handling the space, fit-out, maintenance and facilities under one contract and monthly invoice.

Online marketplace for booking short-term luggage storage in shops, hotels and smart lockers.

Whering is a digital wardrobe app where people catalogue their clothes, plan outfits and packing, and share styling ideas.

Robotic lab automation platform that runs life-science experiments end to end for pharma and biotech labs.

Sen operates cameras in orbit and streams live ultra high definition video of Earth from space.

Makes an engineering-grade AR headset and platform that lets builders check work against design models on site.

Online health clinic for weight loss, men's and women's health, with prescriptions and coaching.

Builds a minimally invasive wearable biosensor that tracks glucose, lactate and other biomarkers in real time.

Makes quantum random number generator hardware that supplies true randomness for encryption.

Builds the core software and developer tooling behind the Polkadot blockchain network.

Builds low-cost modular autonomous strike drones and swarm software for UK and NATO militaries.

AI system that automatically records and analyses food thrown away in commercial kitchens so operators can cut waste and food costs.