My little knowledge of the ownership of Panshanger suggests some quirkiness on the part of the owner (not to be confused with the owner of the school/club) who was once described to me as eccentric. Apparently she only allowed the introduction of the cafe on condition that it would be for use by members only to keep out the hoi polloi. Clearly that failed because in the days when I could be bothered to visit I always managed to get served.
I do remember being told that she was dead set against selling to developers though. Maybe the land has changed hands?