01Dev Tools
Cursor
AI code editor opening its European HQ in London.
LondonSeries D
Sector · United Kingdom
AI Developer Tools startups in the UK
AI startups building the tools engineers use to ship software: code generation, review, testing, DevOps and backend infrastructure. Several of the fastest-growing names in AI dev tooling have chosen the UK for European engineering.
10
Companies
42
UK & remote roles open
02Dev Tools
Diffblue
Oxford spinout using AI to auto-generate Java unit tests.
OxfordSeries A
03DevOps AI
Kubiya
AI teammates that automate DevOps tasks for engineering teams.
RemoteSeed
04AI Backend
Unbody
Modular AI backend stack for developers building AI software.
RemoteSeed
05Dev Tools
Cosine
Y Combinator-backed maker of Genie, an autonomous AI software engineer.
LondonSeed
06Dev Tools
Vercel
Frontend cloud and maker of Next.js and the v0 AI app builder.
LondonSeries E
07AI Dev Tools
Tessl
Spec-driven development platform where engineers define specs and AI agents build, test and maintain the code.
King's CrossSeries A
08Dev Tools
Meticulous
AI that automatically writes and maintains end-to-end frontend browser tests without engineers writing them.
LondonSeed
09AI QA
Tekton Dynamics
AI agents that stress-test and quality-assure other AI products; YC W24, founded by Oxford and Imperial PhDs.
LondonSeed
10Dev Tools
cubic
AI-powered code review platform that learns your codebase, flags bugs and helps teams merge pull requests faster (YC X25).
LondonSeed