Land opposite the main Tesco store, east of the Oxford Road roundabout, has been sold by Wiltshire Council to a rival supermarket.
The discovery of a body of a man believed to be in his 30's at a unit in Porte Marsh Industrial Estate in Calne is not being treated as suspicious, Wiltshire Police have said.
The Co-op store in Mill Street, Calne has been given a closing date.
