Anthony Lewis pleaded guilty to non-recent offences of rape, sexual and indecent assaults against young girls between 1987 and 2007.
Lewis, who also goes by the names Chaz, Chas, Charlie and Tony, worked as an entertainer.
He would target his victims by setting up talent show companies, preying on young children under the guise of getting them gigs.
The investigation began in September 2017 when one of his victims went to the police to report the historic abuse.