I like this for the detail -a fog repeater, man on the roof and the water column with the brazier for the winter.

Ian Townsend says "Probably taken about 1938 after its rebuilding in Nov 1937 into the form shown here. I think this looks like Doncaster"

There are surprisingly few pictures showing the GNR canopies over the tracks adjacent to the through roads at Doncaster station. In the book "Rail Centres: Doncaster" by Stephen Batty (Ian Allan, 1991) there is a picture taken which shows the canopy in place (although maybe partially dismantled) over the Down platform road but the one over the Up side has been removed and steelwork for the new canopy is in pace, in other words it looks like 'work in progress'. The caption gives the date as 31st May 1957 so they were removed at this time.