The Brexit "divorce bill" negotiated by Boris Johnson is up to £5 billion higher than the UK government expected, according to "definitive" EU calculations.

Boris Johnson’s claims about the prospects of rewriting the Brexit deal have been compared by the European parliament’s Brexit coordinator to the “false promises, pseudo-patriotism and foreigner-bashing” he is said to have used to win the EU referendum.

Boris Johnson has said he would refuse to pay the promised £39bn to the EU unless it offers better terms on Brexit.

Boris Johnson has vowed to withhold Britain’s £39bn Brexit “divorce” payment until the EU agrees better terms for the UK to leave.

The Office for Budget Responsibility (OBR) predicted in 2018 that the so-called "divorce bill" for leaving the European Union would cost the UK between £35bn and £39bn - but the EU say the figure is over £40bn.