DJ Neil Fox has been charged with six counts of indecent assault, including one against a girl under 14, two against two other girls under 16 and three charges relating to females aged over 16. He also faces two charges of sexual assault.
The offences against the three underage girls relate to the period 1991 and 1996. The offences against the female aged over 16 are alleged to have taken place between 2003 and 2014.
Fox, 53, of Fulham, who is married with children, was first arrested on 30 September 2014 after allegations of assault were made to the Metropolitan Police. He was suspended from his broadcasting job at Magic FM while the complaints were being investigated.
Fox - also known as "Doctor Fox" and "Foxy" - was arrested a second time in December 2014 when further allegations were made and for a third time on 13 March this year (2015).
Scotland Yard said the charges against Fox were not connected with Operation Yewtree, set up in the wake of the Jimmy Savile scandal.
Fox's lawyer Anthony Burton said: "It is wholly inappropriate at this stage for Mr Fox to make any comment, save that he categorically denies each and every allegation that has been made against him."
As well as an award-winning career as a radio DJ on Capital FM, Radio Luxembourg and Magic, Fox appeared on the precursor to the X Factor, "Pop Idol", which ran from 2001 to 2003. He was on the judging panel with Simon Cowell, Pete Waterman and Nicki Chapman.
Fox also presented the chart show on Channel 5 and appeared on the BBC Three sketch show "The Wrong Door" playing himself.
A Metropolitan Police statement said: "Neil Fox, 53 (12.6.61) of Fulham SW6 has been charged with nine offences involving six victims, three of which were juveniles at the time of the alleged offences."
Fox will appear at Westminster Magistrates' Court on 16 April.