Thanks for replying. The picture doesn't have distortion or anything like that. It's just a very sub par picture and am really surprised. Also the TiVo box is so fiddly and finicky. It's really poor compared to the competition
You're not alone - I've noticed that the HD channels often appear to have a superior picture on Freeview over that on Virgin. Occasionally this is because the Freeview channels are broadcasting in 1080p rather than VM's 1080i - Channel 4 and ITV seems to use the superior resolution regularly whereas the BBC is normally 1080i (720p fiddled with!). It varies though, and I think Channel 4 and Film4 in HD on VM are extremely good.