# AI Agents startups in the UK

Startups building autonomous AI agents that take actions: executing workflows, transacting and handling entire jobs rather than just answering questions. One of the most active frontiers in UK AI.

8 companies · 10 open UK & remote roles

## Companies

- [Gradient Labs](https://aistartupslist.co.uk/company/gradient-labs.md) · City of London · Series A · 4 roles. Builds autonomous AI customer-support agents purpose-built for regulated industries like financial services.
- [Paid](https://aistartupslist.co.uk/company/paid.md) · London · Seed · 1 roles. Outcome-based billing infrastructure so businesses can charge for AI agent results rather than seats.
- [Swap](https://aistartupslist.co.uk/company/swap.md) · Shoreditch · Series C · 5 roles. Ecommerce operating system unifying cross-border selling, tax, returns and agentic storefronts for global brands.
- [Smooth](https://aistartupslist.co.uk/company/smooth.md) · London · Seed. Fast, reliable AI browser agent API that autonomously performs web actions across sites (YC F24).
- [Leeroo](https://aistartupslist.co.uk/company/leeroo.md) · London · Seed. Trainable AI agents that continuously learn an organisation's knowledge and ship data and AI programmes (YC X25).
- [Trace](https://aistartupslist.co.uk/company/trace.md) · London · Seed. Context-aware orchestration platform routing repetitive workflow tasks between humans and AI agents (YC S25).
- [Lua Global](https://aistartupslist.co.uk/company/lua-global.md) · London · Seed. Unified mid-market AI agent platform letting companies build and deploy custom agents for sales, support and operations (YC F25).
- [Whitespace](https://aistartupslist.co.uk/company/whitespace.md) · London · Seed. AI operating system for wholesale distributors, deploying self-improving agents for inventory planning, support and order entry (YC S26).