So it would appear that BT internet users have had there internet habits tracked and documented without consent:

http://www.theregister.co.uk/2008/04...rm_2006_trial/

At present such tracking systems, although available, are still highly controversial, and companies that are using them are under increasing attack within the media for using such systems. There is currently an open investigation by the Information Commissioner into the legality of these systems and,...

welshstew