BORIS Johnson has threatened to walk away from talks after Angela Merkel warned Britain would have to “live with the consequences” of Brexit.

The German chancellor fired the shot across the bow of the Prime Minister as he decided to ditch plans laid out by his predecessor Theresa May for close economic ties to Brussels.

It comes as Britain’s chief negotiator David Frost – known as “the sherpa” – will kick off a new round of talks at the EU headquarters as part of an “intensified process”.

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