(1) If immediately before the commencement day a police officer was obtaining information from a person, tasking a person or using or disseminating information obtained from a person in circumstances that amount to human source activity, then—
(a) the person is not required to be registered as a human source under Part 3 until—
(i) if the person is to be registered as a reportable human source, the day that is 6 months after the commencement day (beginning with the commencement day); or
(ii) if the person is to be registered as a non-reportable human source, the day that is the first anniversary of the commencement day; and
(b) until the relevant day specified in paragraph (a)(i) or (ii), a police officer is not prohibited from engaging the person in human source activity only because the person is not registered as a human source under Part 3.
(2) In this section, "commencement day" means the day on which Part 3 commences.