The first shots in the Usenet campaign were fired on Thursday, 4 May 1995 with a posting to alt.conspiracy entitled "BBC's Hidden Shame". The more interesting articles from the ensuing war of words (which took place mostly on the uk-local groups) are archived here in date order.
The discussion has been more energetic at some times than others; at the time of writing (July 1997) two years of posts have not resulted in either an admission from the guilty parties or solid evidence coming to light. Discussion on the newsgroups has all but petered out, although with the short attention-span of Usenet a resumption of posts could occur at any time.
If you haven't read the FAQ yet then you should have a look at that before browsing these posts.