I have been using Virgin Media broadband for the past 2 years and it's excellent, fast and reliable - it never breaks connection.
Sadly though, I also took their land line service, this is the worst land line I've ever had, the only free calls I can make is at w/ends to UK land lines, they even charge 10ppm + 10p "call set-up" fee for 0845/0870 numbers as well as high call charges to standard numbers during the week, i.e. I made a 1 min call to Manchester from Birmingham at 9pm, this cost 16.5p (with the call set-up fee), why do they need to set-up direct dialed call?
Switching to Virgin phone line was a big error, I was with TalkTalk previously and could (and did) call the world at any time for free, unfortunately, TalkTalk broadband (although free) was awful with constant breaks and slow-downs.
If only there was a provider with a great phone and broadband package, please don't suggest BT or Orange, tried these didn't like either.