The UK's Office for Nuclear Regulation has completed the third stage of its assessment of the first Chinese-designed nuclear reactor technology put forward for such approval.
The regulator will now move on to the fourth and final stage of its Generic Design Assessment, or GDA, of the UK HPR1000 design.
It is hoped that the design will be used in future on a United Kingdom power plant that will be jointly built by China General Nuclear Power Group, which is also known as CGN, and French energy giant EDF.