This - https://maps.google.co.uk/maps?q=stafford&ll=52.82142,-2.11695&spn=0.001431,0.002411&hnear=Stafford,+United+Kingdom&gl=uk&t=h&z=19 - is the old Common Road station. The track was the path parallel to Aston Terrace. There was a siding off to the north, into the Salt Works. There may still be some track left at the southern edge of the plant yard - I'll try to have a look, there are some vestiges there, it appears from this view.
There were still movements on there up to about '76, but only to the RAF Depot about half a mile to the North East.