Sonya Walger was born in Hampstead, London. Walger was educated at the independent Wycombe Abbey School and at Christ Church, Oxford, where she studied English Literature, receiving a first class degree. Walger is conversational in French and fluent in Spanish, as her father is Argentine.
In 1998, Walger played Becky in one episode of Midsomer Murders. She portrayed Flic in Goodnight Sweetheart in 1999, and appeared in two episodes of the crime/drama The Vice. She played Donna Barnes on the HBO T