Drivers are being cautioned to adhere to official diversion routes and disregard satnavs as an “unprecedented” closure of a five-mile stretch of the M25 in Surrey approaches this weekend.
National Highways issued the warning as it prepares to shut down the motorway from 9pm on Friday until 6am on Monday, between junctions 10 and 11. The closure is estimated to add an hour to journey times for drivers who follow diversion routes on A-roads.