[JasonB]

I don't think it was there before 1996, I think it was newly built.

Planet 24 may have not always been in that building prior to 1996 but it was always behind the house.

There was another now vanished video from YouTube where Chris does a similar tour to what Mark does of the back stage area (pre Planet 24 building) All of the porter cabins behind the toilet building had numbers which Chris says "why they're all numbered like this, i have no idea"