The Beeb presenters will usually mention a name, say Joe Bloggs, and then add allegedly to keep them in the clear.
That may be jokey and TIC because I am not sure allegly get you out of the brown stuff..all the time
One thing puzzles me there is a sayin about Libel "The greater the truth. the greater the Libel" (I dont get that one, any law students on mumsnet?)
Suing for Libel is a rich mans game. Nothing has changed in that area.
Private Eye get sued a lot The BBC very little. Tread carefully. as they say