Fans who began arriving for the sold-out concert when the doors opened at 18:30 GMT said on Twitter there were boos from some people in the crowd almost an hour before he emerged.

BBC: Justin Bieber apologises for O2 gig delay

"It is never very pleasant whatever ground you are at, " said Wilkins, referring to the boos when Scolari brought on Didier Drogba for Ricardo Quaresma.

BBC: Wilkins defends Scolari tactics