The singer had been unwell all day but insisted on coming to the gig and not letting fans down. JET took to the stage at 8pm GMT and performed "Rip It Up" and She's A Genius" before Nic passed out. Nic got up on his feet and jokingly told the audience he had Swine Flu before collapsing for a second time.

Nic was walked off stage by the band's tour management leaving Cam, Chris And Mark to soldier on to perform 3 more songs - "Holiday," "Beat On Repeat" And "Get What You Need."

Nic was rushed to University College Hospital in Euston, London, UK in an ambulance and is being treated for symptoms of gastroenteritis, acute vomiting and dehydration. The singer will be held overnight for monitoring.