
Isomorphic Labs
London AI drug-discovery company; raised $2.1bn Series B in May 2026, majority Alphabet subsidiary.
Last refreshed: 13 May 2026 · Appears in 2 active topics
Why did UK taxpayers co-invest alongside Google's parent in a $2.1bn drug-discovery round?
Timeline for Isomorphic Labs
Mentioned in: CuspAI raising $400m on Bezos money
UK Startups and InnovationMentioned in: Orbital's $50m raise has no UK lead
UK Startups and InnovationClosed $2.1bn Series B with SAIU as minority equity co-investor
UK Startups and Innovation: Sovereign AI unit backs Alphabet-owned labWho founded Isomorphic Labs and what does it do?
How much did Isomorphic Labs raise in its Series B?
Background
Isomorphic Labs closed a $2.1bn Series B on 12 May 2026, the largest single fundraise in UK life sciences history and a landmark for London's AI drug-discovery sector. The round was led by Thrive Capital, with Alphabet, GV, CapitalG, MGX, and Temasek participating. The UK Sovereign AI Unit joined as an equity co-investor, its first cheque into a majority foreign-owned company.
Founded in 2021 by Sir Demis Hassabis, co-creator of AlphaFold, the company is a majority subsidiary of Alphabet and applies the same machine-learning approach that cracked protein-folding to small-molecule drug design. Its pipeline spans oncology, rare diseases, and metabolic disorders. By 2026 it had active partnerships with several major pharmaceutical firms. Headquartered in London's Knowledge Quarter, it operates as Alphabet's dedicated life-sciences R&D Arm in Europe.
The SAIU's participation marks a deliberate shift in UK sovereign investment policy: prior equity cheques went to domestically controlled companies. The decision to back an Alphabet subsidiary signals that the unit will prioritise strategic capability over ownership purity. Critics have questioned whether the SAIU's undisclosed cheque size constitutes meaningful sovereign leverage in a $2.1bn round.