I have just been chatting to Rockin Paul (HDVDL) about this.
Simple solution - walk up to Stockwell (10 minutes max) and catch the tube from there. He has friends who did it for a Billy Idol gig a few weeks back, they had no problems whatsoever.
I am now leaving the car at home (seeing as how the tailgate window has developed amind of its own and pops open by itself) and catching the train.
Last train to my town from Waterloo is after Midnight, so there is time to take this alternative route.
See you all there, i`ll be wearing a black Gretsch T-Shirt, with a Skeleton Drummer on the front....if it is cleaned and ironed by then...
Dave