welbeck
i watched it on a live feed, i would guess most people attending lived within walking distance.
I would not agree with that, the event was held in Clapham obviously because that's where the tragedy took place, it is logical to me that people would come to that area from all over, because the vigil would have been more powerful where it was held and they wanted to mark that area with flowers, much like the flowers laid for Diana at KP it was the place where people felt there was a better connection and where others would be doing the same. It wasn't a local Clapham vigil it was a London vigil first and foremost and also went nationwide, I would say (unless your live feed showed all 3 local stations and bus stops) that most people would have come from areas around London and used public transport to get there and back