Mid-Norfolk Railway @Dereham by Adam Swaine Via Flickr: Dereham railway station is a railway station in the town of Dereham in the English county of Norfolk. The station is served by heritage services on the Mid-Norfolk Railway from Dereham to Wymondham..Station Road, Dereham NR19 1DF England The Mid-Norfolk Railway runs Heritage Steam and Diesel train services from the market town of Dereham to Wymondham in Norfolk, just outside Norwich. It is run mainly by volunteers, and operates a number of Special Events throughout the year