As far as I am aware the British Steel Corporation bought ? 23 of the class from B.R. in 1968 and all were for service on the internal lines delivering ironstone from the local quarries to Corby steelworks in Northamptonshire. The nature of this usage was more main line in nature for which they were ideal. ? However, they were large locomotives, even by steelworks standards, with a long wheelbase and not well suited to shunting in the confines of a works.? None of the B.S.C locomotives ever saw service at Scottish works. ?