A crowd surge occurred last night during a gig thrown by the 'X Factor' finalists JLS in Croydon.
Digitalspy reports that ambulances were called to the scene after a stampede broke out at the free show for over 1,000 fans at Fairfields Halls.
The four-member boyband, mentored by Louis Walsh, is one of three acts competing in the final of the talent contest next Saturday night.
A teenager told The Croydon Guardian "I'd been queuing since 1pm but when the school kids turned up it became so busy with them all pushing us towards the front. There was a pregnant woman in the crowd. It was horrible. I couldn't move. I couldn't get out."
Four ambulances and three police cars attended the scene. Six people were treated at the scene, including one with breathing difficulties and one with abdominal pain.
A police spokeswoman said "All are believed to be minor injuries."
