(1)A relevant offender must, within the period of 3 days beginning with—
(a)his using a name which has not been notified to the police under section 83(1), this subsection, or section 2 of the Sex Offenders Act 1997 (c. 51),
(b)any change of his home address,
(c)his having resided or stayed, for a qualifying period, at any premises in the United Kingdom the address of which has not been notified to the police under section 83(1), this subsection, or section 2 of the Sex Offenders Act 1997,
[F186 (ca)any prescribed change of circumstances, orF186]
(d)his release from custody pursuant to an order of a court or from imprisonment, service detention or detention in a hospital,
notify to the police that name, the new home address, the address of those premises [F187, the prescribed detailsF187] or (as the case may be) the fact that he has been released, and (in addition) the information set out in section 83(5).
(2)A notification under subsection (1) may be given before the name is used, the change of home address[F188 or the prescribed change of circumstancesF188] occurs or the qualifying period ends, but in that case the relevant offender must also specify the date when the event is expected to occur.
(3)If a notification is given in accordance with subsection (2) and the event to which it relates occurs more than 2 days before the date specified, the notification does not affect the duty imposed by subsection (1).
(4)If a notification is given in accordance with subsection (2) and the event to which it relates has not occurred by the end of the period of 3 days beginning with the date specified—
(a)the notification does not affect the duty imposed by subsection (1), and
(b)the relevant offender must, within the period of 6 days beginning with the date specified, notify to the police the fact that the event did not occur within the period of 3 days beginning with the date specified.
(5)Section 83(6) applies to the determination of the period of 3 days mentioned in subsection (1) and the period of 6 days mentioned in subsection (4)(b), as it applies to the determination of the period mentioned in section 83(1).
[F189 (5A)In this section—
(a) “prescribed change of circumstances” means any change—
(i)occurring in relation to any matter in respect of which information is required to be notified by virtue of section 83(5)(h), and
(ii)of a description prescribed by regulations made by the Secretary of State;
(b) “the prescribed details”, in relation to a prescribed change of circumstances, means such details of the change as may be so prescribed. F189]
(6) In this section, “qualifying period” means—
(a)a period of 7 days, or
(b)two or more periods, in any period of 12 months, which taken together amount to 7 days.
165.Section 84 sets out the requirements on a relevant offender to notify the police of changes to notified details. Under subsection (1)(c) an offender must notify the police within 3 days, of the address of any premises he has stayed at within the UK, besides his home address, for a ‘qualifying period’. This place might be a friend or relative’s house or a hotel where he has stayed. A qualifying period is defined at subsection (6) and is a period of 7 days, or two or more periods, in any twelve months, which taken together amount to 7 days.
166.Subsection (2) allows an offender to notify the police of any change to his notified details (his name, address or having stayed away from home for 7 or more days) in advance of such change. The advance notification must give a date when the change is expected to occur.
167.Subsections (3) and (4) deal with the scenario in which the change does not take place as notified in advance. As long as the change takes place no earlier than 2 days before the date notified or no later than 3 days after the date notified, the offender need not update the police as to the actual date on which the change took place. However, where the change takes place outside this period, the person must notify the change in accordance with subsection (1), that is, within 3 days of the actual change. And, where the change takes place 3 days or more after the date specified, the person must also notify the police (within 6 days of the date specified) that the information he notified in advance is no longer correct.
168.The effect of subsection (5) is that time when an offender is in custody, detained or abroad (as provided at subsection (6) of section 83), will be disregarded for the purpose of determining the 3 day period specified in subsection (1) and the 6 day period specified in subsection (4)(b).