DeepMind was founded in London, UK and still headquartered there, and is one of the leaders in the field..
Notable well-known things from DeepMind are AlphaGo (the first time a computer beat a world champion at Go), AlphaFold (resulting in a Nobel prize). Gemini (LLM, a variant of which is used in Google search results) and Gemma (open-weights LLMs).
They were acquired by Google, so you could argue they aren't centred in the UK any more, but I still think they qualify as international leadership in AI coming from the UK.
Notable well-known things from DeepMind are AlphaGo (the first time a computer beat a world champion at Go), AlphaFold (resulting in a Nobel prize). Gemini (LLM, a variant of which is used in Google search results) and Gemma (open-weights LLMs).
They were acquired by Google, so you could argue they aren't centred in the UK any more, but I still think they qualify as international leadership in AI coming from the UK.