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EU referendum campaign officially begins

The EU referendum campaign has officially begun - 10 weeks before Britain decides whether or not to leave the union.

The referendum will be held on June 23.

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Boris heckled with 'No Tories in Newcastle'

Hecklers said "no Tories in Newcastle" Credit: PA

Boris Johnson was heckled in Newcastle as he attacked David Cameron for "shamefully" spending £9.3 million of taxpayers' money on a pro-EU leaflet.

The London mayor criticised the "scared" tactics of the remain campaign as he continued his northern "Brexit blitz" tour.

But Boris had the start of his speech interrupted, with hecklers shouting "no Tories in Newcastle".

A group of women were escorted from the building.

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