She was commissioned by the Home Office, to conduct a report into vulnerable women in the criminal justice system of the United Kin"gdom, published in March 2007. It explores the idea that if a lot of women who are in prison are mentally ill, whether they should be there at all. The report outlines "the need for a distinct radically different, visibly-led, strategic, proportionate, holistic, woman-centred, integrated approach". The report is known as the Corston Report and has largely informed government policy on the matter. Progress and improvements by local probation services, the National Probation Service, Her Majesty's Prison service and the National Offender Management Service (NOMS) are regularly compared to the recommendations in this report.