Early on in the debate - hosted by Today presenter Nick Robinson - the Labour leader said he would negotiate a new withdrawal agreement with the EU within three months before putting it to a final say referendum - alongside Remain - within six months.

The prime minister countered by saying he already had a withdrawal agreement in place, and would use it to leave the EU next month if he won a working majority in Parliament.

But Nick Robinson challenged Mr Johnson, pointing out that while he had a withdrawal deal in place, he did not have a trade deal with the EU, and so could not rule out a no-deal exit in January 2021.