Ex-detective's AI startup hits $400M valuation

Ex-detective Steven Richardson's stealth AI startup 22one reaches $400M valuation with Sequoia and Lux backing.

Oct 27, 2026

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Ex-detective's AI startup hits $400M valuation

Ex-detective Steven Richardson's stealth AI startup 22one reaches $400M valuation with Sequoia and Lux backing.

In brief

Ex-detective Steven Richardson's stealth AI startup 22one reaches $400M valuation with Sequoia and Lux backing. London startup 22one, founded by ex-detective Steven Richardson, achieved a $400 million valuation after securing investment from Sequoia and Lux Capital. Originally reported by Dealroom.

Quick answers

What's the deal?
London startup 22one has reached a valuation of around $400 million, according to the Financial Times.
Who's behind it?
Founder Steven Richardson was a detective chief superintendent at Merseyside Police until 2021 and co-founded Riven, an AI software company for police data.
What's the endgame?
22one aims to build AI tools for police efficiency while remaining in stealth mode with only the word 'investigate' on its website.
What is the key takeaway from Ex-detective's AI startup hits $400M valuation?
London startup 22one, founded by ex-detective Steven Richardson, achieved a $400 million valuation after securing investment from Sequoia and Lux Capital.

What's the deal?

London startup 22one has reached a valuation of around $400 million, according to the Financial Times.

Who's behind it?

Founder Steven Richardson was a detective chief superintendent at Merseyside Police until 2021 and co-founded Riven, an AI software company for police data.

What's the endgame?

What's the endgame?

22one aims to build AI tools for police efficiency while remaining in stealth mode with only the word 'investigate' on its website.

What matters most

London startup 22one, founded by ex-detective Steven Richardson, achieved a $400 million valuation after securing investment from Sequoia and Lux Capital.

Read the original on Dealroom

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