By car Arundel is easily accessible by road. The Mill Road Car Park (pay and display) is next to the Museum. Postcode for sat nav BN18 9PA By train Regular trains every day. We are a 10-minute walk from Arundel station.Visit National Rail to plan your train journey. By bus The number 9 and 85 both stop in Arundel, making your trip easily accessible from Chichester and the Worthing direction.