I've just been having a look around the rather unobvious online shop at the BFI. Their collection of Mining / Railway / Heavy Industry etc DVDs has increased significantly since I last looked. As it's so easy to forget that this source of material exists I thought it might be worth a few URL's that hint at what is available.NOTE some of these DVD's may be available at lower price elsewhere so check around. Also note this is not a complete list of what is there that might be of interest.British Transport Filmshttp://filmstore.bfi.org.uk/acatalog/BFI_Shop_British_Transport_Films_39.html