Well if I have cause to dispose of anything metal at Rose Hill, I usually see our friend in the parking area first. He's a whole lot more willing to help than any of the PPE-clad, hands in pockets operatives at the recycling centre.
As for who owns the land, I suggest a call to Cllr Craig Wright. He's currently involved with the "improvements" in and around the station and the cycle route enhancements so should know who owns what.