LONDON — A few years ago, Britain agreed to let China take an ownership stake in its newest nuclear power plants, figuring Beijing had the nuclear know-how and the construction smarts to help replace the country’s aging power stations.It was a warm moment in British-Chinese relations, a deal signed in 2015 during a carefully choreographed visit to London by President Xi Jinping of China with the British prime minister at the time, David Cameron.Six years later, Britain is having second thoughts. Financing for a planned power station facing the North Sea, estimated at 20 billion pounds ($28 billion) and necessary to …
