Original Radio 1 DJ Chris Denning is the latest man to be arrested by police investigating sex offences in the wake of the Jimmy Savile scandal.
The 72-year-old was arrested on suspicion of sex offences in east London on Monday and questioned by officers from Operation Yewtree.
The allegations he faces are unrelated to Savile. He falls under the strand of Yewtree that police have termed "others".
He is the 13 person to have been held by the Metropolitan Police as part of the investigation.
Mr Denning has been bailed until July.
The former DJ was part of the original BBC Radio 1 team when it launched in 1967. He had previously worked as an announced on BBC2 when the channel first broadcast in 1964.
Mr Denning first worked on radio as a teenager in America before travelling to Kenya to work on the British Forces Network there.
He presented Where It’s At with Kenny Everett on the BBC’s Light Programme.
Of the 13 Operation Yewtree suspects two have been charged: PR consultant Max Clifford and former BBC driver David Smith.
An unnamed 65-year-old man and former BBC producers Ted Beston and Wilfred De’Ath have been released without charge.
The eight others, including Gary Glitter, Dave Lee Travis, Freddie Starr, Rolf Harris and Jim Davidson, remain on police bail.