32 London Mempool companies backed by Y Combinator

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

Data platform AI teams use to curate, label and evaluate training data, especially for physical AI.

AI workflow platform that turns financial data into client-ready decks, memos and reports for banks and investors.

App for immigrants to send money home and access financial services across 30+ countries.

AI platform that helps patent attorneys draft, prosecute and litigate patents faster.

B2B marketplace and AI grading tools for wholesale secondhand clothing, linking suppliers with retailers in 100+ countries.

Cross-border payments platform helping importers in emerging markets pay their overseas suppliers.

Open-source business intelligence tool built on dbt, with an AI analyst that answers data questions.

AI platform for financial crime compliance: transaction monitoring, screening, risk scoring and case management.

B2B cross-border payments and FX platform focused on emerging market currencies, especially Africa.

Booking and commerce platform for businesses that sell travel, events and experiences.

Mytos runs an automated contract manufacturing service that uses its iDEM robotic platform to produce stem cell derived therapies.

Software for multinational companies to design, run and analyse employee benefits across 160+ countries.

Open source platform for running AI agents and long background jobs in TypeScript.

AI platform that automates admin and compliance paperwork for financial advice firms.

AI-first third party administrator that handles insurance claims for carriers and MGAs.

AI plus human outbound sales service that books meetings for companies selling into traditional industries.

Simulates how audiences and stakeholders will react, so companies can test decisions before making them.

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

Automates GP practice admin such as patient registration, triage and booking for the NHS.

AI studio that lets teams create on-brand videos, podcasts and audio from text using AI voices, music and visuals.

AI case intelligence platform for litigation lawyers, used by firms like Dentons, A&O Shearman and Duane Morris.

AI agents that automate KYC and AML compliance reviews for banks and fintechs.

Care platform for GP practices that combines online consultations with triage, scheduling, document processing and an AI scribe.

AI inventory planning software that helps fashion, beauty and home retailers buy, allocate and replenish stock.

Carbon accounting platform that tracks emissions in commodity and heavy industry supply chains for traders, manufacturers and banks.

AI agents that answer calls, book jobs and handle customer operations for plumbers, electricians and HVAC firms.

Dating and marriage app for Muslims, connecting single Muslims worldwide.

24/7 exchange offering perpetual futures on US equities, commodities and FX without a broker.

Reelables makes printable, battery-powered smart labels that track the location of shipments, cargo and inventory.

Builds onboard carbon capture systems that trap CO2 from ship exhausts and turn it into limestone.

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