Only 55 britannia class standard class 7 locomotives were ever produced each one of them constructed at the british railway crewe works the first of these britannias made its first ever journey on 11th january 1951 between crewe and carlisle clocking in a maximum speed of 75mph this 39robin hood39 locomotive no 70038 st97703 was the 39th britannia locomotive to roll out of the works on the 29th january 1953 and spent the first section of its career in east anglia and north london