Thanks for your help. We've had 2 Virgin engineers out who made changes to the resolution. Both said the same thing: "Non-HD channels are blurry". One even connected to his own screen to confirm that it's not our TV that's the issue, but is Virgin. Despite that, Virgin won't cancel our contract or give us free HD sports channels. If I knew that non-HD channels were blurry, I would never have entered into an 18th contract which I now can't leave, and I can't watch sport in decent quality, despite all that money.