Youngest daughter of actor Roger Winslet
Was a member of the National Youth Theatre with Charlotte Reather. They are still friends and perform regularly together as part of the Gum!Gum! sketch troupe along with Marc Elliot and Jonathan Oney.
Has a son, George Bryn Mawr Winslet Jones with Gareth Rhys Jones.
Made her TV debut at age 19 in the critically-acclaimed BBC Television drama, The Scold's Bridle (1998), playing a drug addict's daughter opposite Miranda Richardson.
Younger sister of actresses Kate Winslet and Anna Winslet