This would be covered surprisingly by the Data Protection Act. Have a look at the following links.
DPA CCTV Code of Conduct - http://www.ico.gov.uk...co_cctvfinal_2301.pdf
It appears that CCTV installed at a pub, is being made a condition of gaining an alcohol license.
http://www.ico.gov.uk...tion/cctv_in_pubs.pdf
19:30 Sat 13th Mar 2010