I disconnected completely. They keep putting their prices up every year!
Already had virgin phone and broadband, so added the TV. The SD picture looks better, and i get more channels for less money as part of my package. On top of that, all you pay is a single £50 activation fee for HD, and thats it - no monthly charges for HD whatsoever, just the one off setup fee!
Menu system takes a day or two t get used to, but I like the TV on demand features as well.