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Ineffable Intelligence secures £814m seed round

UK-headquartered AI superintelligence company Ineffable Intelligence has secured $1.1bn (£814m) in seed funding. Ineffable is developing a new generation of algorithms that learn through experience. Instead of being trained only on vast amounts of existing data, these systems interact with their environment, test ideas and improve over time, allowing them

  • Kirstie Pickering
  • April 28, 2026
  • 0 Comments

UK-headquartered AI superintelligence company Ineffable Intelligence has secured $1.1bn (£814m) in seed funding.

Ineffable is developing a new generation of algorithms that learn through experience. Instead of being trained only on vast amounts of existing data, these systems interact with their environment, test ideas and improve over time, allowing them to discover new solutions and insights on their own. 

The company believes this approach could open the door to potential breakthroughs in science, medicine, engineering and beyond.

The funding round includes backing from the government’s Sovereign AI Unit, which is co‑investing with the British Business Bank. The Bank has additionally invested $20m (£14.8m) in the emerging tech company.

Sovereign AI and the British Business Bank will support the company as it builds its technology, grows its team and scales its operations from the UK.

Other investors in the round – which marks the largest European seed round in history – include Sequioa, Lightspeed, NVIDIA, Index, Google, EQT, Evantic, Flying Fish, DST Global and BOND. 

“Ineffable Intelligence is aiming to address one of the most significant opportunities within AI – superintelligence – which has the potential to open new frontier applications, including in advanced problem solving and new product development with relevance across sectors,” says George Mills, investment director at British Business Bank. 

‘The UK produces world-class AI talent, and we are pleased to back strategically important businesses to scale and stay in the UK.”

Ineffable Intelligence is led by David Silver, a prominent AI researcher and a professor at University College London. Silver is an expert in reinforcement learning within AI, with previous roles at AlphaGo, AlphaZero, AlphaFold and AlphaProof. He also led the reinforcement learning team at Google Deepmind. 

Silver launched Ineffable Intelligence to develop ‘superintelligence’ by building a superlearner that can discover all knowledge from its own experience.

Launched just weeks ago, the investment in Effable brings the total number of companies backed by the government’s Sovereign AI Unit so far to eight. 

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