Amy Pemberton

Amy Pemberton played the Seventh Doctor's companion Sally Morgan in the Big Finish Doctor Who audio stories, beginning with House of Blue Fire, and Nadel in the Doctor Who Unbound audio story Masters of War.

Pemberton is a noted voice actress and singer and, since 2016, she has co-starred with Arthur Darvill in the TV series DC's Legends of Tomorrow in which she provides the voice of Gideon, a semi-sentient AI. In the 2017 episode "Land of the Lost", she played a physical avatar of Gideon in similar fashion to how The Doctor's TARDIS was portrayed in TV: "The Doctor's Wife".