To be honest it sounds exactly like Julie Montague’s documentary series “An American Aristrocrats Guide to Great Estates” where she visits stately homes, although a key difference is Julie is totally unpretentious despite being a Viscountess and actually lives in a very beautiful stately called Mapperton so can actually relate to the owners that she meets.
The delusion : "I wonder if, one day, If I ever don't want to do this job anymore, If they would let me have a TV show where I basically just take people around and explore the beautiful homes of England" =>>> Girl, the only reason they would actually consider it is because of your following and if you had a high profile/bankable image. No one would quit youtube and being an influencer to solely be on TV, you've got to be present and have a following on all media if you want to be relevant love. Anyways, I think there are tons of other potential candidates that would be considered before Lydia. For instance, I think people would rather have crazy Steph from Chateau Diaries presenting that type of show than chav Lydia.