Britain's Prime Minister Boris Johnson visits Metropolitan Police training college in Hendon, London

Boris Johnson has apologised to voters for failing to take the UK out of the EU by 31 October and called the Brexit extension a matter of “deep regret”.

In an interview on Sky News this morning, the prime minister also refused to say what is the naughtiest thing he has ever done after he was asked the question that stumped Theresa May in 2017.

Meanwhile, Nigel Farage has announced that he will not be standing as an MP in the December election but said he would not be standing down Brexit Party candidates to help the Conservatives win a majority.