And before the tournament started, there were massive disputes over whether players could join non-South African clubsand still play for their country.
Both Mr Cameron and Ms Jowell said they hoped the volunteers would get involved in a new charity Join in Local Sport which is helping thousands of clubsand community groups throw open their doors to "capture the enthusiasm" for sport after the Olympics.
"My goal was to join Arsenal out of all the English clubs because it is a club that makes me dream and I have been a fan since I was a child, " he continued.