The last run of a narrow gauge diesel locomotive in industrial service in a British factory. 

Painter Brothers, Hereford.
Lister Railtruck 40407/1954
Filmed in 2011 when I bought this, and the other Lister 54181/1964, which had already been lifted off the track by the overhead gantry crane.
To the best of my knowledge the title of this video is correct. There are a tiny number of other British industrial locations which still have narrow gauge tracks, an even tinier number with locomotive haulage, and preserved locomotives have operated on industrial lines.
But I don't know of any other locations in the British isles where a narrow gauge diesel locomotive has run in a factory in industrial service after the day I shot this video.
Immediately after the last frame of this video the crane lifted 40407 off the rails and an era ended.
At 1:30 you can see one of its successors, a battery electric machine.