Ministers are coming under pressure to screen arrivals from China as the number of Covid-19 cases there continues to surge after Beijing’s abrupt decision to end most of its strict pandemic restrictions. The US became the latest country to impose controls on travellers entering the country from China on Wednesday, demanding that all such arrivals show proof of a negative Covid test. The UK government has so far refused to follow suit, although there were mixed messages on Thursday over whether that policy might change in the coming days. The…