Character mistake: The quote on the wall in Bethlem: Mens sana in corpora sano. 'Corpora' would be feminine, whereas 'sano' is masculine. So it should be Mens sana in corporE sano.
Taboo (2017)
1 character mistake in show generally
Starring: Tom Hardy, Jonathan Pryce, David Hayman, Oona Chaplin
Genres: Drama
Factual error: Several of the soldiers at the Tower wear their hair tied back in queues. These were abolished in 1808 and the series is set in 1814. Since they were loathed as well as against regulations, it's highly unlikely that any soldier would have worn them after they were abolished.