Susannah York (9 January 1939-15 January 2011) voiced Registry and Our Mother in the Big Finish Doctor Who audio story Valhalla.
Among the acclaimed British actress' many films were The Killing of Sister George, Oh! What a Lovely War, Battle of Britain, the lead role in a 1970 TV adaptation of Jane Eyre and many appearances in Armchair Theatre. Science fiction and fantasy fans, however, remember her best as Lara in Superman (which also featured William Russell) and Superman II. She was one of the few Oscar-nominated actresses to appear in a Doctor Who production.