One Direction caused mayhem in central London yesterday (November 28) whilst filming the promo for their latest single 'One Thing'.
The band, who appear on this year's X Factor charity single 'Wishing On A Star', took to an open top bus to film the video.
Harry Styles revealed they would be shooting the promo in London's Trafalgar Square, writing: 'Trafalgar Square... Let's Do It!!!'
X Factor boyband One Direction have followed in the footsteps of Adele to try and crack the American music market.
One Direction have announced that they are signing up with Adele's record label Columbia to try and make it big State side.