Next week could mark the beginning of the end of Boris Johnson's political career. It's a remarkable turnaround for the man who four years ago won the largest Conservative majority since Margaret Thatcher dominated UK politics in the 1980s.

Johnson will give televised evidence to a parliamentary committee investigating whether he deliberately misled Parliament when he denied that any lockdown rules had been broken in 10 Downing Street, then his official residence and place of work as prime minister, during the Covid pandemic.