To get to the mall in time I would need to stay in a hotel the night before or the night after. The weekday events start to early to make so I would need to stay in a hotel the night before and the weekday events they run finish too late and I would need to stay in a hotel after the game. I have looked at all the timings and going all the way across London to Reading right at the start or end of the day isn't possible.
I am more looking into the South and South east end of London. Billericay is a bit far, I would need a 09:30 start rather than the usual 08:30 to be able to make sites up there on time. So I am targeting more London end of Kent and South London within M25. How well a site is connected and how many changes I have really changes the timing a lot. I have found many of the Kent sites are no where near train stations making them very expensive (cabs) to get to and the train lines are obscure meaning many of them despite crow flies distance being fine are actually 3 or more hours away. Most of the sites down the train line I am on have closed. Gillingham for example used to have sites and there was Northfleet CQB.
The three sites close to me were Bunker 51 and TWA urban and UCAP sandpit. Those 3 sites are all well within an hour, but with TWA urban closing down I have just the two. UCAP sandpit is no two tones (still got my CM16 transparent for at least 1.5 months due to Bunker 51 timing of games) so that is out of the question in the short term. I probably need to stick to half days for a while anyway as my fitness needs serious work! Hearing about heartattack hill in the sandpit does not sound like its the right site for me right now.
TWA woodland is about 1 hour and 15 minutes but needs a cab to complete the journey and then the timings go up and up with further sites. Many just can't be reached for their start time. The placement of the nightclub looks like it would be just about close enough because of the train lines its on as well.