Khan, a senior member of the Labour Party, said Britain was now facing either a bad deal or a no-deal Brexit, both of which were “incredibly risky” for Britain.

Writing in Sunday’s Observer newspaper, Khan blamed the government’s handling of the negotiations and said the threat to living standards, the economy, and jobs was too great for voters not to have a say.

“The government’s abject failure – and the huge risk we face of a bad deal or a no-deal Brexit – means that giving people a fresh say is now the right – and only – approach left for our country,” he said.