Thanks Dava, oddly enough, the photo that you selected shows a diesel shunter and my Dad was sent to college to learn diesel engineering by BR, in order that he could carry out a lot of the initial testing in the mineral sidings adjoining the shed. Must try and find a photo I remember from the family album of him in the cab of one of Messrs. Barclays offerings! Thank once again for your consideration, Kind regards,Jock67B.