Couple of days after London-Edinburgh-London, so the chances of me wanting to ride the 100 are very slim. Not really my thing anyway, it is clearly being marketted as a timed race it seems. But I think it is a good idea.
I would, however, try and come out the day before for the freecycle closed streets around London. I know there are pros and cons with having these sort of closed roads 'come ride around London' events, but if only a small percentage of those people who drag their bike out of the shed for the first time in years choose to go on and ride more often, then this is progress.
Personally, I may need to borrow a 'bent for the day, as I am guessing sitting on a bike may be challenging post LEL