Not sure if you're replying to me or not?
If so, I haven't got my extra box, nor will I get it until the engineer comes out next month. But Sky are still saying my subscription is going up the extra £12 from now
When paying a bill, you’re paying in advance for your fixed-price subscriptions such as Sky TV, (including any multi-screen subscriptions and HD), Sky Broadband, Sky Talk and Sky Line Rental. (if you have them)
If you have any one-off charges, such as call charges, movies from Sky Store or Sky Box Office charges, these will appear on your next bill.
So yes you pay now (November) for items you get in December.