These trails opened only a few months ago, went there today with a French mate and three other "retro-bikers" and had a real blast. It took us just an hour drive from Croydon and is South-West of Turnbridge Wells. You pay £5 parking fee per car - which covers the cost of riding on man-made trails I guess.
The main trail is 13.2km long and 90% purpose-built singletrack. Not overly technical (there were kiddies along the course) but great fun, twisty wooded singletrack often covered in large gravel or loose soil which makes a lot of the turns tricky. There's a bit of climbing but not too much, and all in small portions. Some bits reminded me of Thetford, Checkendon and Leith Hill. The rigid singlespeed was the perfect bike for it.
We did one lap at a leisurely pace, taking photos talking etc, had some food at the chalet/café by a lake, then some of us went for another lap. I went as hard as I could to try and get the lap under 40", did it with only 5 seconds to spare - knackered, out of water and sweating profusely - the forest was protecting us from the hot sun but the intense vegetation (moslty ferns) kept it quite humid.
I'll definitely go back to this place, will try organise something with ACC there sometime. Apparenly Bewl Waters, which is only a few miles away, is as good if not better an area to ride. Bedgebury also has some North-shore trails but we didn't find them!
http://www.bikemagic.com/news/article.a ... 1&UAN=4731
http://www.forestry.gov.uk/forestry/infd-6ljhu5