I'm sure under the ammended act of wireless telegraphy 1949 and communications act (television licensing) regulations 2004 - anybody selling or renting equipment that is capable of receiving any television service (this includes Sky, ntl:Telewest (virgin media) who are classed also as TV dealers) must pass on relevant details within 28 days to Tv Licensing or face a criminal charge for each person not notified of.
That will be alot of money then if they have over millions of subscribers.
