It's my understanding that, as a Premium channel, HBO do not have commercial breaks during their shows.
Likewise in the UK, NOWTV (an on demand service) that airs GoT also doesn't feature commercials.
Why, then, does GoT frequently fade out to a GoT title card sting when airing in the UK? No adverts follow, it just drops straight back into the show. What's the purpose of it, why does it even exist?
It's poorly done, often jarringly so, and transitioned with a slow fade that's often hilariously misjudged (in last nights episode, as Daenerys re-appeared only to have the swelling orchestral accompaniment to her return immediately muted).