Prior to her professional acting career, Miller worked as a photographic model. in 2001, she made her film début with South Kensington, with Rupert Everett and Elle Macpherson and later had a recurring role in the television drama series Keen Eddie. in 2004 Miller had a supporting roles in the remake Alfie with Jude Law and in Layer Cake. She starred as Patricia in the London production of Flare Path at the Theatre Royal Haymarket in 2011. Miller also worked alongside Global Cool during their 2007 eco friendly campaign.