See this page for information about the difference between Aerial Mode (TV channels from your aerial) and Internet Mode (channels streamed over the internet): https://ee.co.uk/help/tv-sport/manage-use/modes
GB News isn't offered as a channel in Internet Mode, which is why you don't see it in the TV Guide. The ability to pause/rewind the channel in their app is down to GB News to develop, if they want to.
