Ukip's biggest donor Arron Banks has warned the party could be about to "die or fade into the background".

The tycoon also said his close ally Nigel Farage could return again as leader to stabilise the party.

Asked if Ukip was finished, Mr Banks told BBC Radio 4's Today programme: "It could be, it's at a crossroads."

He expressed his doubts over whether Ukip has a future as he warned the "pressure cooker" has exploded.