In the 1950s and into the 1960s several streets were renumbered.

13s to 11a	Northampton Road	Wharf Road
College Street	North End	Wood Street
High Street	Saffron Road
Kimbolton Road	Vine Hill Drive	Wykeham Road
Market Square	Westfield Terrace	York Road

and
Wellingborough Road was re-named Northampton Road