Sherlock (in-universe)

Sherlock was a BBC One television program on Earth based on the stories of Sherlock Holmes.

History
A teenager had a poster for the show on her wall, in the 2010s. (COMIC: )

When the Twelfth Doctor asked Noah Holland if he had read Sherlock Holmes in October 2017, Noah asked, "The guy on the telly?" (PROSE: )

In non-valid sources
A post-it note on the wall of Steven Moffat's secret writing lair at the heart of a hollowed-out volcano beneath 221B Baker Street referenced "Wholock: The Musical". (WC: Stealing Series 9 Scripts)