Boris Johnson is set to U-turn on visas for lorry drivers to allow 5,000 foreign hauliers into the UK after panic-buying gridlocked petrol stations across the country overnight. Motorists ignored Government pleas for calm as they jammed roads and police had to be called in to marshal drivers amid fears that fuel shortages could bring the economy to its knees. The Prime Minister is expected to buckle and grant visas for thousands of foreign drivers in a bid to tackle the shortages, while soldiers will also be drafted in to help at HGV testing sites to clear a backlog of...