Students must buy a TV licence if they have a television in their home. Using a TV or any other device to receive or record TV programmes (for example, a VCR, set-top box, DVD recorder or PC with a broadcast card) without a valid TV Licence is against the law and could lead to prosecution and a fine of up to £1,000.
For current costs please check: http://www.tvlicensing.co.uk/
Further information about TV licencing can be found here