Taken at the London Transport Museum’s Acton Depot. I absolutely love how the newer additions to the map have been literally riveted onto the old map – no stickers here! The presence of both British Rail symbols and an early Docklands Light Rail logo seems to place the final iteration of this map somewhere in the period from 1991 (when the Bank DLR station opened) and 1997 (when BR was totally privatised), although I suspect the map itself had been in use far longer than that.

Source: andywalton7/Flickr