I now understand the reason for referring the buildings North and South, my confusion comes from the building that looks like it will be the "new" station/ticket office, isn't assigned a title or number on the concept drawings (located between #7-#8-#9.) I thought it was being referenced as "North" as the consultant planner Gordon Haliday refers to it as the North building to the south of the "South" building that is being discussed for demolition. As does the illustrations!