“The government will increase the UK's public (sovereign) AI compute capacity twentyfold by 2030, starting with a new state-of-the-art national supercomputer.”
Department for Science, Innovation and Technology, AI Opportunities Action Plan
Deadline is 2030; early steps include Isambard-AI in Bristol, Dawn in Cambridge and a planned £750 million supercomputer in Edinburgh, but the full twentyfold expansion is unresolved.