According to the retired BBC worker, the Crimewatch host was told that DJs, stars and corporation staff were involved in organised abuse.
But when she tried to get bosses to investigate the alleged ring and other abuse complaints inside the BBC “no one wanted to know”, the former friend said.
Undeterred, Jill is said to have then raised the claims with senior management in the mid-1990s but no investigation took place.
The TV host was shot dead a few years later on the doorstep of her London home. The 37-year-old’s murder remains unsolved.