Williams was born in North London. Both her parents are barristers.
Williams was educated at South Hampstead High School, an independent school for girls in Hampstead in north London, and Newnham … See more

After graduation, Williams worked with the Royal Shakespeare Company in both Stratford-upon-Avon and London. In 1995, she toured the United States in the National Theatre production of Shakespeare's Richard III… See more

Williams had a seven-year relationship and then engagement to the actor Jonathan Cake which ended two weeks before their planned wedding. In 2003, she married the actor and playwright Rhashan Stone, with whom she … See more