DJ Neil Fox has been arrested over another three alleged sexual assaults.
The 53-year-old Magic presenter, known as Doctor Fox, was questioned by police at a central London police station after he answered bail over four separate sexual assault allegations.
Two of the latest allegations are said to have happened in the 1990s, while the third is said to have occurred in 2007.
Fox has been bailed to a date in March 2015.
Scotland Yard did not name the broadcaster but said officers from Westminster had arrested a 53-year-old man for a further three alleged sexual assaults involving three different women.
He was first arrested on Tuesday, September 30, following four allegations of sexual assault against two women, including three "non-recent" allegations and one from earlier this year.
A Scotland Yard spokesman said: "The man was arrested at a business address in W1 and taken to a central London police station. Officers subsequently searched addresses in SW6 and the Littlehampton area of West Sussex.
"On Monday, 8 December, he returned on bail to a central London police station and was arrested for a further three sexual assaults involving different women. Two allegations are said have happened in the 1990s, the third is said to have happened in 2007.
"The man has now been bailed to return pending further enquiries to a date in March 2015."
The arrest is not part of Operation Yewtree, the force said.
A spokesman for Bauer Media, which owns Magic FM, said: "We have no comment to make on what is a police matter."
Following Fox's arrest in September, the company said the presenter would be off air ''to enable him to devote his full attention to dealing with these matters''.
A spokeswoman for Fox declined to comment.