The Great Western Railway Victoria Class were broad gauge steam locomotives for passenger train work. This class was introduced into service in two batches between August 1856 and May 1864. They were all withdrawn between 1876 and December 1880. The first eight locomotives were named after ruling heads of state, but the remaining locomotives received the names of famous engineers, starting with the railway's own Isambard Kingdom Brunel. This theme was continued with the Hawthorn Class that followed.

Locomotives