I phoned sky up to day askin to cancel my account. The women asked me Why, and I said "I;ve started a new job doing nights, and the only programs I watch are at night, so I would miss them, and have no use for SKY". She said "We have a offer at the min, we can offer you SKY+ bos for £15 (usually £199) and £30 instalation charge".
Try it! The engineers coming on Monday morning :D