It must be over a year now since we cancelled our Sky service - we initially had the full package plus the broadband which I found to be nothing more than an utter joke of a service given the amount of traffic shaping they implemented!
Staying on topic with their television subscription, I can honestly say we haven't missed their service one iota. Taking into consideration the cost per month and the amount of adverts they show (20 mins per hour) the films I've either already got on Blu Ray along with series I can get elsewhere (without the adverts) for free and usually long before they air here on Sky! They've phoned us a quite a few times and sent letters offering 25% and 50% off XYZ package for 12 months. Even if they offered it to me for free I'd probably tell them to ram it - we're having our harling done on the house later this year and the dish will be coming down then too.
Good riddance to them, they'll never receive our custom again!