Aitken was born in Dublin, Ireland, the daughter of Sir William Aitken, a Conservative MP, and Penelope Aitken, whose father was John Maffey, 1st Baron Rugby. Her grandfather was the UK Representative to Ireland (1939–49). She is a great-niece of newspaper magnate and war-time minister Lord Beaverbrook, and sister to former Conservative cabinet minister Jonathan Aitken. She attended Riddlesworth Hall Preparatory School in Norfolk, Sherborne Schoo...
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A Fish Called Wanda
As Wendy
Jinnah
As Edwina
Mary, Queen of Scots
As Lady Bothwell
The Grotesque
As Lavinia Freebody
Bedroom Farce
As Susannah
The Fool
As Lady Amelia
Half Moon Street
As The Hon. Maura Hardcastle
Fierce Creatures
As Di Admin
Out of the Trees
Asylum
As Claudia Greene
Dare To Dream: The Making of Jinnah
As Self
Whinfrey's Last Case
As Mrs. Otway
Some Girls Do
As Robot Flight Attendant (uncredited)
Don't Be Silly
As Ellie Bloom
Crown Court
Poor Little Rich Girls
Codename
As Mrs. Petrie
Wogan
As Self
Romance (UK)
The Edwardians
Love on a Branch Line
As Lady Flamborough
Jemima Shore Investigates
Justice
As Lady Beste
Manhunt
As Madame Leonard