Broadcasting is a funny medium - if it is live and there are no recordings (hardly likely now) it would be slander. If the recording (reprint etc) is disseminated then it is libel.

I once received a letter from an ex-employer effectively telling me they thought I had done something since leaving. Then went on to say don't do it again - accusing me. I was advised that any letter to a private individual is subject to libel laws if any person other than the officers of the company had seen it - like the typist or the owner of the house I was living in!

Miriam Margolis (allegedly) used to put chatty answerphone messages about her exploits. On one occasion she had a set-to with an actress and voiced opinions vociferously on tape. She was made to remove the tape and "publish" an apology on the same medium - it was libel because it was repeated in recorded form.

The first thing libel lawyers ask is the depth of your pocket.

John from 'Ull - If you said the "Prime Minister" was a lying piece of shit, Blair would have no case - you have (is it?) 6 to chose from, and that is just those extant. AND 60 million expert witnesses to call on.