A performance by top British pop group Mansun descended into a punch-up between the lead singer and security guards. Paul Draper threw a speaker off the stage and smashed a microphone system in front of 500 cheering fans at the Hard Rock Cafe on Sunday night. When staff at the Tsim Sha Tsui restaurant rushed to restrain the 23-year-old, he attacked them. Scuffles then broke out among the audience. Yesterday the chain's entertainment manager, Jacky Chan Chun-kit, said about $50,000 of damage was done. 'The singer kicked and hit me,' he said. 'I have never seen a band behave like that.' Only a plea from the group's record company, EMI, prevented the police from being called. The restaurant chain has now banned the group, on their first visit to the territory, from all its outlets worldwide. The four-member group from Chester have huge support in Britain where their album Attack of the Grey Lantern went to number one. Band members were unavailable for comment yesterday, but EMI's marketing manager Kevin Wong Kin-ho blamed the brawl on the group becoming swept up in the music. The band leaves for Japan today.