Just had a letter from Telewest confirming the upgrades + they are also offering a free security package for their customers: this includes an antivirus, spyware, pop-up blocker, ad remover, firewall, parental control and privacy manager.
If you're a telewest broandband complete or above customer you can download
here
I disabled the firewall as I have a hardware version but the spyware seems to be quite effective as it removes items dynamically as you work/surf - the AV also worked on test viruses and the ad remover works to an extent though pprune will be please to know their stay put!
Cheers
Charles