David Cameron will accuse members of his own Cabinet of conning the British public during the EU referendum campaign.

The Prime Minister will put party rivalries aside to join forces with leading figures from the left to accuse his fellow Conservatives of putting out "often contradictory" statements on the economic case for leaving the EU.

"They are perpetuating an economic con trick on the British people and we're calling time on it," Mr Cameron will say.

Boris Johnson will warn that Britain faces a "tripple whammy of woe", including an extra £2.4bn bill from Brussels, if it remains part of the EU.

The former mayor of London and leading member of the Leave campaign said the risks of a Remain vote - which he said included the potential for massive bailouts and hikes in the EU budget - are "massive".

It follows a weekend of bitter Tory in-fighting over the EU debate with Sir John Major, the former Prime Minister, branding Boris Johnson a "court jester" and accusing the Leave camp of being "deceitful".

Mr Cameron, backed by Labour's Harriet Harman, Liberal Democrat Tim Farron and the Greens' Natalie Bennett, will call on Brexiters to clearly spell out their economic plan if the UK votes to leave the bloc on June 23.