The A10 (in certain sections known as Great Cambridge Road or Old North Road) is a major road in England. Its southern end is at London Bridge in the London Borough of Southwark, and its northern end is the Norfolk port town of King's Lynn. From London to Royston it chiefly follows the line of Roman Ermine Street. The main route to Cambridge is now via the M11 motorway, however non-motorway traffic still uses the A10.