"A campaign was started against metal music and we were labelled as Satanists and evil, " says Wyvern drummer Seif El-Din Moussa.

BBC: SOS Music festival fans

Rev Campbell said his church was opposed to Hallowe'en because it was "one of the two major days for Satanists", and "God's word clearly condemns and warns people about celebrating or glorifying Hallowe'en or the occult".

BBC: Hallowe'en carnival 'curses city'