Crew prepare for soundchecks ahead of the 2011 Jingle Bell Ball at London's O2 Arena. This image appears in the gallery:Countdown To The 2011 Jingle Bell Ball! 26. Crew prepare for soundchecks ahead of the 2011 Jingle Bell Ball at London's O2 Arena. Picture: Richard Johnson 28 images See the full gallery: Countdown To The 2011 Jingle Bell Ball!