Got a letter on the post offering me the full Sky Cinema package for £10 a month (usually £18) for 36 months, no contract. Cancel at any time. At the end of the three year deal it goes back to the normal price.
When you click the URL you should see a message that says "Sign in for your Sky Cinema offer".
Offer ends 30th November.
Not sure whether this will only work for certain accounts. Please comment with how you get on.