Johnson said that he was "bewildered and appalled" after receiving a letter from the from a House of Commons committee.
Politicians have claimed Conservative MPs were being "manhandled" and bullied into voting with the government to oppose a ban, counter to what their party manifesto said in 2019.
The Treasury chief, Rishi Sunak, a potential rival for the PM’s office, tweeted, ”I stand behind the PM hundred per cent as he takes our country forward. The PM was right to apologise and I do support his request for patience while Sue Gray, a public service veteran with a reputation as a straight-shooter, carries out her enquiry.”
“All five criteria of genocide are evident in Xinjiang,” she said. The detainees were subject to “brutal torture methods, including beatings with metal prods, electric shocks and whips”.
China stands ready to work with the UK and the EU to move forward the work related to cooperation agreements in the transition period, he added.
Britain left the European Union 43 months after the country voted for Brexit in a June 2016 referendum.
Pompeo said that he travelled to the UK to start the dialogue on an agreement as soon as possible.
On Tuesday, the UK participated in its last meeting as an EU member when Foreign Office minister Chris Pincher attended the General Affairs Council.
The bill, which ensures Britain leaves the EU on Jan. 31, will pass between the Houses until both sides agree on the wording. Once the process is finished, it will go to the palace for Royal Assent by Queen Elizabeth II.