"The AA and RAC have reported heavy congestion on roads up and down the country, particularly those leading to Wales and the West Country. The police are urging motorists not to travel unless absolutely necessary, and if it is essential, to use only minor roads and leave motorways and intercity trunk routes clear for official traffic. A full list of designated Essential Service Routes is posted outside your local authority headquarters: it includes the M1, M18, A63 and A629."