a BBC Radio 1 microphone outside the BBC Broadcasting House in central London. Chris Denning, a former BBC Radio 1 DJ and announcer, pleaded guilty to a string of sexual offenses that took place over nearly a decade. CARL COURT/AFP/GettyImages

A former British DJ for the BBC has admitted to committing a string of sexual offences over a nearly two-decade period. Chris Denning, 75, said he abused 11 males, including men and young boys, some who were as young as under 14 years of age.

Denning pleaded guilty to 21 child sex offenses committed between the years of 1969 and 1986 at a hearing at London’s Southwark Crown Court. Denning denied three counts of indecent assault, reported BBC.

The offenses were connected with an investigation, led by the Surrey Police, to further investigate alleged sexual offenses linked to the Walton Hop Disco, a teen disco in Surrey. The disco was open from 1958 and closed in 2001, the Daily Mail reported.

The former radio DJ is currently serving a 13-year jail sentence for the assault of 24 victims from the ‘60s through the ‘80s and was convicted in 2014, according to the Telegraph.

Denning was widely known in the U.K. as a prominent presenter and DJ in the early 1960s. He was one of the first announcers on BBC Two and became one of the original Radio 1 DJs and remained a major force in British radio through the 1970s. He had his own music and video production business, and Denning is credited with launching the careers of British glam rock singer Gary Glitter and the pop band Bay City Rollers.

The allegations brought against the former British radio star have been continuous since he rose to fame. In 1974, Denning was convicted of “gross indecency and indecent assault, but was not imprisoned,” BBC reported.

Throughout the '80s he even received jail time for more counts of gross indecency, possession of indecent images and indecent assault.

For the court hearing, four victims attended to see Denning plead guilty.

Prosecutor Jonathan Polnay spoke of Denning’s plea, telling the Telegraph, “He [Denning] has a very long record of offenses against young boys. Given the very long indictment he has pleaded guilty to, we take the view that these counts would not make a difference to sentence.”

Denning will face sentencing at the same court under Judge Alistar McCreath on Oct. 6.