By Entertainment package, do you mean the NowTV one or something else? If it's NowTV, you can watch via the NowTV app. Freeview channels are accessible by the apps for the individual networks if they have one.
Thanks both, so getting entertainment package with BT essentially gives me a now tv account with appropriate access
Good morning @crush123. Yes, you will get new login details for the Now TV app which can be set up on up to 6 devices and watched on 2 at the same time. The live-streamed Now TV channels can be viewed and recorded on the BT TV box through the TV guide.