Cash is king ! If the 'numbers' are right and they almost always will be, your pet airfield/brownfield site so designated, will fall like a ripe plum in response to a joint assault by importuning developers acting in cahoots with the County Authority.
Any bets on what Old Sarum will look like in five to ten years from now ? GA needs a vocal action group to press for legislation placing a legal responsibility on the developers to provide alternative airfield facilities. Would that result in a more costly residential unit ? No where near as much as continued immigration would impose.