142.This section provides the mechanism for supervisory authorities to be notified when a person is newly included on the children’s barred list or an equivalent list in Scotland or Northern Ireland, or a person ceases to be subject to monitoring in relation to regulated activity relating to children. If a supervisory authority wants to be notified in future if the person is barred or ceases to be subject to monitoring it must register an interest in that person by making an application to the Secretary of State (section 48(3)(a)). A supervisory authority may later withdraw its application in relation to the person (section 48(3)(b)). It may only register an interest in a person where it needs to be notified of changes in that person’s circumstances in connection with its functions (section 48(4)).