From Wikipedia

Mary Lilian Agnes Morris (13 December 1915 – 14 October 1988) was a British actress

Morris made her stage debut in Lysistrata at the Gate Theatre, London, in 1935. In 1943, she played Anna Petrovitch in the Ealing war movie Undercover as the wife of a Serbian guerrilla leader, and appeared in many British films of the 1930s and 1940s. On television, she played Professor Madeleine Dawnay in the science-fiction television drama A for Andromeda (and its sequel, The Andromeda Breakthrough), and Cleopatra in Antony and Cleopatra (as part of the BBC's adaptation of Shakespeare's Roman plays, The Spread of the Eagle, 1963).

As a Number Two in The Prisoner episode "Dance of the Dead" she dressed as Peter Pan during a masquerade ball. After a 25-year absence she reappeared in films as the mother of the murdered boy in the 1977 horror film Full Circle. She also appeared on television in Doctor Who in the story Kinda (1982), playing the pivotal role of the shaman Panna opposite Peter Davison.[citation needed]

Other television appearances included the Countess Vronsky in the BBC's Anna Karenina (1977), the macabre, ancient relative in the Walter de la Mare story, Seaton's Aunt (1983) in Granada Television's Shades of Darkness series and the formidable matriarch in Police at the Funeral, an adaptation of one of Margery Allingham's Albert Campion stories for the BBC's Campion (1989).