Hattie Morahan

Hattie Morahan portrayed the Eighth Doctor's companion Helen Sinclair for the Big Finish Doctor Who audio anthologies Doom Coalition 1, 2, 3, 4 and Ravenous 1.

Non-DWU work
Outside of Doctor Who, Morahan is most well known for her roles as Alice in The Bletchley Circle, Gale Benson in The Bank Job (2008), Ann in Mr. Holmes (2015), Rose Coyne in My Mother and Other Strangers (2016), and Agathe / The Enchantress in Beauty and the Beast (2017).