20 units of the GWR 4500 Class, which were designed as small mixed traffic locomotives based on the earlier 4400 Class and can reach the speed of 60 miles per hour, were built in 1924, during Collett's tenure at Swindon.
20 units of the GWR 4500 Class, which were designed as small mixed traffic locomotives based on the earlier 4400 Class and can reach the speed of 60 miles per hour, were built in 1924, during Collett's tenure at Swindon.