I don't have a UHD TV so can't be certain, but....
I'm fairly sure the panel on the right is just the EPG data and doesn't necessarily have a separate flag for UHD.
Does your TV have any options to check the received video input as to what resolution it's getting? That would be a good test.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks