Catamaran
Acquired
What they do:
The AI-powered risk decision platform
Quick facts:
HQ: London, United Kingdom
Top AI Startups in London
This list has 82 startups and was last updated on Oct 15, 2026. 22 of them are hiring right now. Largest teams: Model ML, Encord, and Conveo. Latest round: Obsero raised €1M (Oct 13, 2026).
82 startupsPage 3 of 3
Opearlo
Acquired
What they do:
Opearlo produces voice apps for Amazon Alexa and Google Home.
Quick facts:
HQ: London, United Kingdom
Shuttle
Shut down
What they do:
Build Backends. Fast.
Quick facts:
HQ: London, United Kingdom
MindPortal
Shut down
What they do:
Thought-to-Language AI Models
Quick facts:
HQ: London, United Kingdom
CustomerOS
Shut down
What they do:
Uncover high-fit leads already silently engaging with your brand
Quick facts:
HQ: London, United Kingdom
Atla
Shut down
What they do:
The improvement engine for AI agents
Quick facts:
HQ: London, United Kingdom
CodeStory
Shut down
What they do:
Aide is an AI-native , privacy-first IDE built on top of VSCode
Quick facts:
HQ: London, United Kingdom
Invaria
Shut down
What they do:
The next generation logging and observability platform
Quick facts:
HQ: London, United Kingdom
SalesSift
Shut down
What they do:
Intelligent Lead Sourcing
Quick facts:
HQ: London, United Kingdom
Quary
Shut down
What they do:
The first in-browser analytics engineering platform
Quick facts:
HQ: London, United Kingdom