A bit of info, I'm not sure what's known and not as I've not been following tiscali tv:
It's a trial which is available on a trial basis to select customers at 32 telephone exchanges across London, prior to a full UK launch scheduled to take place later this year.
At launch, Tiscali TV offers around 80 TV channels, including E4, More 4, BBC Three and Four, Five US, ITV1 to 4, MTV, FX, Paramount Comedy and the Cartoon Network. It also offers over 6,000 hours of VOD programming, including a catch-up service that offers primetime BBC shows that have been broadcast over the past week; a music video service that features over 5,000 titles; 1,000 m*ovies; and complete series of a number of popular TV shows, including "Spooks," "Futurama," and "Sex and the City."
So sounds a lot better than btvision, but that's not surprising considering the homechoice background.