Rolls-Royce SMR was selected as the preferred technology provider in the UK's SMR competition in June 2025 after a two-year international Great British Nuclear selection process. Its 470 MWe pressurized water reactor is designed to be factory-built for easier transportation and reduced construction risk. The reactor has reached the third and final step of the ONR Generic Design Assessment. A final investment decision was made in February 2026.
UK Government (Great British Nuclear), BNF Technology, Exelon