The letter about Radio Hacking and Aspidistra.....I was there the other week!
Sussex Police own the site now (it's used for training exercises), my department is running a live web streaming event from there in a few months so I was up there doing some techy testing stuff for that. We got a guided tour....
The bunker that was under Aspidistra was repurposed as a nuclear shelter during the Cold War, the South East would have been governed from there in a crisis.
After it was decommissioned the police bought it, the bunker is used as an archive and training rooms and the old buildings are used for all sorts of training.
The big mound is the base of Aspidistra - the tower is a modern mobile phone mast I think.
Me being led down into the bunker.....
If you want to see more of the place we'll be broadcasting live from there all day on the 25 July - I'll be filming but I might even get on the other side of the camera if you're really lucky
http://www.sussexpolicepeople.co.uk/competition/
EDIT: Sorry about the massive thread hijack.