The Tories are “toast” if a new Conservative prime minister does not deliver Brexit in time for Hallowe’en, Nigel Farage warned today amid chaotic protests in the Strasbourg seat of the European parliament.

Brexit Party MEPs were admonished by Antonio Tajani, the Speaker, for showing disrespect when they stood and turned their backs while the EU’s anthem, Ode to Joy, was played.

As Mr Farage led his 29 MEPs into parliament — the largest number from any single national party — he had a warning for Boris Johnson and Jeremy Hunt.

“We have two contenders telling us whatever happens, come hell or high water, we are leaving on October 31,” he said. “I have to be honest with you, I don’t believe a word