It is off 5A so before October 1958

Vic says " I need to do a little more research on this location, believed to be viewed from the Brinklow Road bridge, looking south.

There are several similar images of this location on Warwickshirerailways website where the trains all are described as “Up” trains, the angle of shadows suggest that they are “Down” trains as the line ran NW to SE.

Will try and check out a WTT for W497, I have always thought odd numbers were allocated to “Down” trains"