Looking for Sky TV deals for existing customers doesn't always feel like the most straight-forward thing to find. However, there is a page dedicated to Sky TV upgrade deals for those who are already subscribed to Sky.
You may also find more tailored for you when logging into your account.
What's more, if you're really not happy with the price you're paying, it's always worth giving their customer service line a call to see if they can match any of their current deals you've got your eye on. If all else fails, it has been known Sky will budge if you threaten to leave.