The move follows allegations of sexual misconduct against the comedian and actor, which he denies.
The union has been overtaken by Unison as the biggest in the country.
The union spent nearly £100 million building the Birmingham venue, which is now the subject of a QC-led inquiry.
Leftwinger backed by the Socialist Workers Party signals end of Len McCluskey era
Assistant general secretary endorses Steve Turner for Unite union top job in bid to unify Left
Moderates hope for a ‘clean sweep’. But Howard Beckett thinks he’s got the momentum.
General secretary candidate Steve Turner says project was a responsible use of members’ money
Howard Beckett row shows Labour must avoid new "war of the roses" with the union movement.
HuffPost UK understands Labour has suspended Unite leadership contender Howard Beckett.
General secretary candidate slams McCluskey era and says Labour leader should be given “time”.