Of the 10,000 miles of roads that had been built by the Romans, many remained in use and four were of particular strategic importance—the Icknield Way, the Fosse Way, Ermine Street and Watling Street—which criss-crossed the entire country.
Af de omkring 16.000 km (10.000 miles) veje der var blevet bygget af romerne, var mange fortsat i brug, og især fire var af strategisk vigtighed; Icknield Way, Fosse Way, Ermine Street og Watling Street, som gik på tværs over landet.