This order applies to the rail vehicles which are numbered 50701 to 50711 and 79701 to 79711 and which form the diesel multiple-units numbered 175001 to 175011 of the class known as “Class 175/0” and to the rail vehicles which are numbered 50751 to 50766, 56751 to 56766 and 79751 to 79766 and which form the diesel multiple-units numbered 175101 to 175116 of the class known as “Class 175/1” (“the exempted vehicles”) as manufactured by ALSTOM Transport Limited for use by North Western Trains Company Limited.