Thats what I suspect. Giving everyone a subtle nudge to upgrade their Sky box maybe (do the old HD boxes do UHD ?). I upgraded to Sky Q not that long ago. So glad I swerved Sky Glass, that sounds like an absolute shitshow.
My missus is also completely immune with regard to SD and HD / UHD. When I flick between them to show her the difference she just rolls her eyes. I am something of a nerd though.
Since Sky brought in UHD to their coverage, does anyone else think they've made HD just a little bit shittier ? Or...