Jeremy Corbyn will whip his diminished parliamentary party to vote against Boris Johnson’s Brexit deal on Friday, in the outgoing Labour leader’s final strategic call.

Mr Corbyn’s move will give the prime minister a renewed opportunity to establish clear dividing lines between the Conservatives and Labour on Brexit.

The vote, on Friday, will be the first show of parliamentary strength from the prime minister since his commanding victory in the general election last week gave him a majority in the Commons of 80.

Mr Johnson used the parliamentary theatre of Sir Lindsay Hoyle’s re-election as Speaker yesterday to rehearse the contrast between his government and the opposition that he is likely to draw later this week. He boasted that the new parliament was “vastly more