Had a huge surprise seeing this picture. If I am not mistaken, the footbridge in the background links Royal Oak with Leaton Avenue, Baguley? There was a time I lived close to the line and used to take pictures from Shady Lane bridge. Unfortunately only one survived the various moves of house and is much poorer than the other shots on this thread. They/it were taken with a cheap Woolworth's half-frame camera with a wire viewfinder when I was 12/13yo and fuzzy at best. Such is life. The picture is of 48329 hauling a freight.
Looking East toward Northenden I think.