Before Thursday, four arrests had been made as part of the national investigation into alleged sexual offences by Savile and others.
Gary Glitter, comedian Freddie Starr, DJ Dave Lee Travis and a man in his 70s have been arrested and bailed as part of the probe.
Scotland Yard is leading the inquiry and has said officers are currently dealing with around 450 potential victims, the vast majority of whom claim they fell prey to Savile.