If I'd put a bit more thought into it, I'd've come up with some tale about the Dukes of Norfolk having sold the strip of land "from the confluence of the Totley Brook and the Old Hay Brook up to and including that river crossing known as 'Heeley Bridge' " (and associated "air rights") to the former Midland Railway in "order to allow the good governance and operation a locomotive-powered train service upon metalled tracks", thus assigning those historical rights to East Midlands, and not the formal owners of the land - Railtrack.
Still. Too late now.