Diesels at the Darlington Railway Society's workshops at Hopetwon, Darlington are restored in the open air.  The black one is a Fowler (either 4110006, built 1950 or 4200018, built 1947) and the grey is Ruston & Hornsby 279591, built 1949.

Photo and scan by Les Richardson (les@cirsel.freeserve.co.uk)

http://cirsel.freeserve.co.uk/trains.htm