was born in London, England, the daughter of a poet and an actress. Her father, Evan Jones, was born in Portland, Jamaica in 1927. He grew up on a banana farm, eventually moving to the United States, and from there to England in the 1950s. His most widely acclaimed work is The Song of the Banana Man. Sadies mother, Joanna Jones, was featured as an extra in various television series, including The Avengers.

As a young woman, Sadie opted out of attending university, preferring instead to work an assortment of odd jobs (video production, temping, waiting tables) and to travel. After visiting America, the Caribbean and Mexico, Sadie settled in Paris, where she taught English and wrote her first screenplay. She eventually moved to London, where she currently resides with her husband, architect Tim Boyd, and their two children.

Sadie wrote screenplays for fourteen years before producing THE OUTCAST, her first novel. Her writing credits are an eclectic mix, everything from episodes of BBC-TV shows to a feature film in 2004. Her current project is a pilot for the BBC series DISORDER.