Went to Tilgate yesterday. It pissed down but I still had fun. Some of the singletrack is awesome but has been ruined by mx riders. Massive ruts are hidden in the ferns and your pedals will hit the floor.
The dh runs (about 13 of them) are really short but fun.
Quick vid of one of the many short dh runs at Tilgate, I forgot to switch the camera off so only watch to about 1:20 or you will be bored by my climb back up the hill
http://youtu.be/tWOzd9ArDRYRH10 5NY is the postcode you need for the sat nav. Parking is restricted to a layby. £4 for a day pass from CTC/Forestry Commision. Facebook page is called Ride Tilgate.