Susan Brown
From Tardis Wiki, the free Doctor Who reference
Susan Brown (born 6 May 1945) is principally a stage actor, but has occasionally appeared in high-profile television projects like A Touch of Frost and Prime Suspect.
To Doctor Who fans, she is perhaps best remembered as having played Bridget Spears in TW: Children of Earth. She also has performed for Big Finish Productions. She voiced the midwife and Mary in Bedtime Story, Eleanor Harvey in Return of the Krotons, Maud the Withered in Castle of Fear, Alice Withers in The Eternal Summer and Mrs Withers/Mrs Sowers/Computer Voice in Plague of the Daleks.
