This article is based on my doctoral research into the experience of sex workers in prison. Corston (2007) recommended that a new Reducing Reoffending Pathway 9 be implemented across the female prison estate, namely Support for Women Involved in Prostitution. The premise was that Pathway 9 would offer tailored support to women in prison who have been involved in prostitution in order to support their cycles of offending. This article will consider how women in prison who engage in commercial sex are treated within the criminal justice system and will make recommendations for best practice.