It is appropriate that the first top-level meeting between the British prime minister and the President of the European Commission in 2020 should be between two new holders of their office. The slate has in effect been wiped clean. Both Theresa May and Jean-Claude Juncker are history. Boris Johnson and Ursula von der Leyen will sit down in Downing Street on Wednesday without the political baggage that so weighed down all previous such encounters since the referendum of 2016.

The likelihood is that the two will get on well. The PM will be at his most charming; von der Leyen will be keen to reset the relationship with Britain that has been so damaged by three-and-a-half years of unalloyed rancour.