28 London Mempool companies backed by Index Ventures

Online food and grocery delivery marketplace connecting restaurants, shops and riders, now part of DoorDash.

Lending platform that gives small businesses fast loans, funded by institutional investors.

Online marketplace where private sellers list cars and verified dealers bid to buy them.

AI workforce platform helping large enterprises hire, redeploy and reskill staff using skills intelligence.

AI notepad that writes up your meeting notes without adding a bot to the call.

AI platform that screens customers and transactions for money laundering, sanctions and fraud risk.

Trustpilot runs an online platform where consumers publish reviews of businesses and businesses manage and display them.

Low-cost international money transfers and multi-currency accounts for people and businesses.

Platform for building, testing and sharing skills and context that guide AI coding agents like Claude Code and Cursor.

Incident management, on-call and status page platform with AI agents that help teams resolve outages.

AI that helps IT teams understand, change and migrate complex enterprise systems like SAP.

Payments platform that lets small businesses and accountants collect, approve and pay invoices in one place.

AI lab building AI scientists that work with researchers to speed up scientific discovery.

Payments and finance automation that helps small businesses get paid on time, moving into AI credit control.

AI platform for the full patent lifecycle, from invention ideas to drafting and prosecution.

AI platform for banks and financial firms covering communications surveillance, trade surveillance and regulatory compliance.

Scope gives testing, inspection and certification inspectors an AI workflow that captures site data by voice, video and forms and generates structured reports.

Agentic AI research platform and biomedical knowledge graph that helps pharma R&D teams find targets and biomarkers.

APIs that let businesses search, book and manage flights and hotel stays inside their own products.

Care management, rostering and finance software for UK homecare providers.

AI-assisted writing tool that helps writers develop their ideas and work from first idea to final draft, built to write with the writer rather than for them.

Defence software (Cobalt) that lets operators control mixed fleets of drones, robots and sensors from one platform.

Beryl designs its own bikes, e-bikes and e-scooters and runs shared hire schemes for UK towns and cities.

Bloom & Wild sells flowers, plants and gifts online for delivery, including letterbox flowers.

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

Telehealth platform connecting people with skin clinicians for personalised, medical grade skincare.

Online platform that lets startups run funding rounds, manage cap tables and set up share option schemes.

Ratings and data that show buyers and investors how good carbon credits and climate projects really are.