Earls Court car park, 3rd July 2005

If the miraculously unpricked mauve on Parliament Hill started the whole thing, this was the one that cemented it as a project of sorts. To see one unburst wild balloon in a day is rare (as I've ultimately found, not that you'd guess from the next six), but to see two looks like, well, a coincidence. So much so that I started thinking about how long it would be until I saw my next one.