Greenwich

Great little spot just near the O2 dome. Drive towards the O2 along millennium way, just before you come to a set of lights, on your left there is a turning which looks like it leads you to those big gas chamber things. Drive down the ramp and pull up on the left. It's outside a traffic management depot (so 24hr access) but most of the guys are happy to join in :) very quiet although only room for around 5 cars. After 8pm everyday :)