Sir Michael Parkinson has told ITV News the investigation into his friend Sir Cliff Richard and others "feels like some sort of witch hunt."
He said anyone who has not been charged with a crime should not be named by police or have their names reported in the press.
The talk show host, who lives close to disgraced entertainer Rolf Harris, criticised police handling of such cases saying "the media were there before the police were."
He added there was a "lot to be learned" from Operation Yewtrew and said media should "tread more softly" when covering such stories.
More top news
The Cosby Show star, 80, was found guilty of three counts of aggravated indecent assault.
The Government's stance risks a negotiating car crash with the EU, as it refuses to acknowledge risks over the Irish border.
Sunshine and a soaking