Glee live tour times?

i'm not sure if anyone will know, but i know the doors open at 6.30, what time does the show start? i know there will be some warm up act, what time to the glee cast come on and leave the stage? i was just wondering because i really wanted to meet the cast after as i know they in the usa have been signing autographs, however i live a fair way from london, so the latest train is around 5 past midnight, and i'd need to get on the heavily packed tubes from the 02 to waterloo by then. can anyone help?