Sally Cecilia Hawkins was born in 1976 in Lewisham hospital, London, England, to Jacqui and Colin Hawkins, authors and illustrators of children's books. She is of English and Irish descent. Hawkins was brought up in Greenwich, in southeast London. She attended James Allen's Girls' School in Dulwich. She graduated from the Royal Academy of Dramatic Art in 1998. Hawkins' theatre appearances include Much Ado About Nothing (2000), A Midsummer Night's Dream (2000), Misconceptions (2001), Country Music