Sky One's "The Queen and I" has been added under the Sky Documentaries series as S2018E5. The thing is, it's not non-fiction; it's a dramatisation of Sue Townsend's comedy novel.
https://www.sky.com/watch/title/program ... /episode-1
It's also a full-length one-off drama, so it may also not suit TVDB at all?
edit - confirmed, it's on the MovieDB at https://www.themoviedb.org/movie/567914-the-queen-and-i.