The Sexual Health Strategy ( Department of Health, 2001 ) has encouraged the use of nurse prescribers in the provision of contraceptive and sexual health services, ranging from simple hormonal contraception to enhanced genito-urinary problems such as the treatment of serious sexually transmitted infections and HIV. To fulfil their role effectively, nurse prescribers in sexual health must be aware of the law relating to this sensitive area. In the first of a series of articles, Richard Griffith outlines the provisions of the Sexual Offences Act 2003 that modernizes the law in relation to sexual crimes. This first article covers sexual health and the law, and provides nurse prescribers with a guide to the Sexual Offences Act 2003.