The idea was first mooted at the beginning of this year. In the Los Angeles offices of Blaine's top Hollywood agents, CAA, a number of capitals throughout the world were examined for their marketing potential: the list included Tokyo, Paris and Rio de Janeiro ("David wanted to hang beside the Sugar Loaf mountain overlooking Rio but it was deemed to be too dangerous," one source said.) In the end, London emerged as the winner: the reason, apart from the lucrative TV rights, was the fact that the capital was seen as being "safe" and the demand in Britain for " reality TV", however perverse in Blaine's case, remained high.