Re: BT Sport HD
You can use BT Sport through Plusnet on your SkyQ services, though this will only work on the main box and not any mini boxes. BT Charge a premium to add mini boxes to your subscription which we don't do. Currently there's no embedded app for BT Sport but I have a friend who works at Sky who has just advised me that apparently an App is in development.
If you have an XboxOne or a PS4 these both have BT Sport apps which you'll also be able to use.