I believe the journalist Jonathan Miller is waging a war against the TV
Licencing people.

His website is:
http://www.tvlicensing.biz

The key info you are after is at:
http://www.tvlicensing.biz/info_on_t...sing/index.htm

To summarise:

You do NOT need a TV Licence for owning any kind of TV
receiver/VCR/Satellite receiver/PC with TV-TCard [PC/TV] etc.

When you only use a TV for:
- playing video games
- watch pre-recorded videos [VCR/DVD]*
- closed circuit monitoring [CCD]
- displaying -for example- presentations using your PC
Then "again" you do NOT need a TV licence.

There is loads more advice on the website on dealing with those nasty
licencing people and their threatening letters!

Hope this helps