"We are sure you will agree that this is a deeply concerning situation," Sir Ed wrote in the letter seen by BBC News. "The UK cannot allow the Chinese government to attempt to undermine our democracy by intimidating our parliamentarians." The Sunday Times reported that she was with her husband who was allowed to enter but decided to return. The couple had travelled to visit their son who has lived there since 2019. Sir Ed said the bar was "apparently simply because she is a British Member of Parliament". It comes after after two Labour MPs, Abtisam Mohamed and Yuan Yang, were refused entry to Israel while on a trip to the occupied West Bank this month. Ms Hobhouse's treatment is likely to raise further questions about the government's engagement with China. In 2021, Beijing sanctioned five MPs who had been critical of China. Ms Hobhouse, 65, told the Sunday Times: "My son was waiting at the other end at arrivals... "I couldn't even see him and give him a hug and I hadn't seen him in a year. "When I was given the decision my voice was shaking and I was just saying: 'Why, please explain to me?'" She added that she was not given an explanation - something she described as "cruel". "I am obviously devastated. I was obviously looking forward to holding [my grandson] and cuddling him and... establishing a relationship," Ms Hobhouse continued. "They are obviously quite a long way away, so each month you lose is a bit of a loss for the relationship I will have with my grandson. Having to fly back, it was so hard. I didn't cry but I was very close to tears." The Chinese Embassy and the Foreign Office have been approached for comment.