This is a pleasent wooded area called the Millenium Green and is clustered around the start of the old Heathfield to Tunbridge Wells Line (picture by: perfunctory butcher's). It can get reasonably busy at times so some stealth is required. The GPS location will show near the car park be careful - you're not meant to climb over the wall. Take the signposted route to Millenium Green. If you want to find the Radio GaGa cache as well, please read on.
This is a micro cache and contains the answers to some of the Radio GaGa clues. So if you haven't been able to research the Radio GaGa clues don't worry you can hack around this general area and get them.
The other parts of the clues are in micro caches at the Druids Corner and October Storm.