jonathan18: I get that this deal must be purchased by 27 Nov, but does it need to be enabled from the date of purchase, or is there the ability to delay starting it? Thinking about it for an Xmas present.

You'd need to check with Sky on that one I'd imagine, worse case scenario it's an 11 month gift. Keep in mind it will auto-renew in 12 months time at the $449 price (or whatever it costs at that stop), just remember to cancel it before that happens.