Released debut album, Billie; became the youngest artist to debut at number one in the UK singles chart with "Because We Want To"
Released second album, Walk of Life
Returned to acting in "The Calcium Kid," as the romantic interest of Orlando Bloom's character
Co-starred in the British film, "Things to do Before You're Thirty"
Cast as Rose Tyler, companion to the Doctor, in the revamped BBC series "Doctor Who"; left show after the second season; reprised role in 2008, for three episodes
Portrayed Hero in the BBC adaptation of "Much Ado About Nothing"
Played protagonist Sally Lockhart in the BBC adaptation of Philip Pullman's "The Ruby in the Smoke"
Signed a six-figure contract with publishers Hodder and Stoughton to pen her autobiography, Growing Pains
Made stage debut in a touring production of Christopher Hampton's play "Treats"
Reprised role of Sally Lockhart in the BBC adaptation of "The Shadow in the North"
Cast as the main character, Fanny Price, in a British TV adaptation of Jane Austen's "Mansfield Park"
Played the title role in the British TV adaptation of "Secret Diary of a Call Girl"; based on Belle de Jour's The Intimate Adventures of a London Call Girl
The British series, "Secret Diary of a Call Girl," began airing on Showtime in the U.S.