European route E13
European route E13 is part of the International [E-road network]. It runs most of the length of the M1 motorway in the United Kingdom, from South Yorkshire to London. The E13 follows the route Doncaster – Sheffield – Nottingham – Leicester – Northampton – Luton – London, and is long.
Although the United Kingdom government participates fully in the E-road network, E-routes are not signposted within the United Kingdom.