A furious diplomatic row erupted on Tuesday as Britain accused China of not telling the truth about the “beating” of a journalist by police in Shanghai. Cabinet minister Michelle Donelan criticised Beijing after the Chinese foreign ministry claimed the BBC was maliciously playing the victim over the incident in Shanghai. Downing Street on Monday condemned the treatment of Ed Lawrence – who was arrested while covering protests against Xi Jinping’s zero Covid policy, which includes draconian lockdown restrictions – as “shocking and unacceptable”. But China’s foreign ministry said on Tuesday that journalists should not engage in activities unrelated to their…