Well it says on the website we
can get it here - so I've just rung CS to find if it is available. The nice young lady checked and said yes - it's available -
I'll just enable it on your digital TV!!!!!!! 
I had to explain exactly what it was, and the fact that I don't have ntl TV. Then she said no, it's being trialled in the South East at the moment but there are no plans for it to be made available here in the forseeable future. (RM13 area, Essex)