There is no need to wait and see what picture graces the front page of newspapers next Tuesday. It will be of the Prime Minister “cautiously but irreversibly raising a pint of beer to my lips”. Boris Johnson has made his choice. When rules are eased on Monday 12th April he’s not going to have a haircut – carefully dishevelled locks are his trademark. Instead, aides have booked him a place for outdoor service in a pub garden.