A national register created by the Sex Offenders Act 1997, on which the name of an offender convicted of any of a range of sexual offences is entered. Relevant offenders were obliged to tell the police every time they moved. Part 2 of the Sexual Offences Act 2003 extends the provisions of the 1997 Act, reducing the time in which the offender has to notify the police of any change to his name, whereabouts, or address (from fourteen days to three days) or of any plans to travel abroad. It also introduces a requirement to re‐notify the police of his notified details at least once a year. The length of the period during which the offender is subject to the notification requirements varies between two years (for an offender cautioned for a relevant offence) to an indefinite period (for an offender sentenced to a term of imprisonment of 30 months or more). Section 91 of the Act makes it an offence to fail to comply with any notification requirement without reasonable excuse. The maximum sentence is five years' imprisonment.