David Parsons knew the answer. Good on him. It’s one of the lamp posts on the bridge over the Basingstoke Canal on Queen’s Avenue in Aldershot.
Queen’s Avenue is a long straight road, on which are many things to interest the passer by, with historic Army barracks, monuments, a museum, churches, and Army sporting facilities, including the bridge.
The bridge was in a very poor state of repair in the 1990’s, with rusting deck supports. The Ministry of Defence funded its restoration to enable the bridge to carry traffic up to 40 tons. The Basingstoke Canal Society website describes the history of the bridge, along with many photos of it. Here are my photos, click on images to expand.