Something a little different today. These are press agency shots of the LMS prototype main line diesel no D10000 in the suburbs of north London, pulling freight trains.
Diesels are becoming an endangered species and I've been buying up diesel slides and negatives for some time now. Their death will be caused by Peak Oil, and it will be a brave person indeed who forecast that they'll still be around in 30 years.
And their replacements? Electric locos of course where it's economically viable to electrify routes, and a whole new range of ultra-modern steam locos (presumably wood burners) on non-electrified routes.