5606 Class 56 110 'Croft' Railfreight Construction Heavy Freight Diesel LocomotiveThe first of BR's heavy Type 5 freight diesels, introduced to cope with an increase in coal traffic after the 1973 oil crisis. The first 30 were built by Electroputere in Romania under sub contract from Brush, while the rest were constructed by BREL at Doncaster (56031 115) and Crewe (56116 135). Although they were retired by EWS in 2003, a number have been reactivated for use by freight companies such as Colas, UK Rail Leasing and, soon, GB