7. —(1) Without prejudice to subsection (2) and section 13 and 16(7), a person is subject to the requirements of this Part if he or she is convicted of a sexual offence after the commencement of this Part.

(2) A person is also subject to the requirements of this Part if he or she has been convicted of a sexual offence before the commencement of this Part and, at that commencement, either—

(a) the sentence to be imposed on the person in respect of the offence has yet to be determined, or

(b) a sentence has been imposed on the person in respect of the offence and—

(i) the person is serving the sentence in prison,

(ii) the person is temporarily released under section 2 or 3 of the Criminal Justice Act, 1960, or

(iii) the sentence is otherwise still in force or current.