To his wife’s complaint that a bottle of champagne for one at dinner was too much, Winston Churchill reputedly retorted that half a bottle was too little. His preferred amount of Pol Roger for dinner was a pint: the same amount, he thought, sufficed for two at lunch. But ever since Britain joined the European Economic Community in 1973, wine in pint measures has been illegal. The re-introduction of pint bottles this month (along with 200ml and 500ml bottles), though restricted to English still and sparkling wine, is being trumpeted as a long-awaited Brexit Breakthrough, freedom at last from a noisome relic of the Brussels bureaucracy.