It's the uk's own little newsgroup to discuss all sorts of topics related to telecommunications in Britain, including (but not limited to) technical matters, pricing, STD codes, equipment, BT vs Mercury, Network Services (nee Star Services), ISDN services, modems, etc. You get the idea..
It was born in August 1991 to cater for the large amount of telecoms related traffic in uk.misc, as UK specific enquiries in the UseNet newsgroup comp.dcom.telecom tended to be swamped by the vast number of other articles.