12. A person falls within this paragraph if the person has been convicted of any of the following offences against a child committed at the age of 18 or over or has been cautioned by a constable in respect of any such offence—
(a)an offence under section 2 or 3 of the Sexual Offences Act 1956 (procurement of woman by threats or false pretences),
(b)an offence under section 4 of that Act (administering drugs to obtain or facilitate intercourse),
(c)an offence under section 14 or 15 of that Act (indecent assault),
(d)an offence under section 16 of that Act (assault with intent to commit buggery),
(e)an offence under section 17 of that Act (abduction of woman by force or for the sake of her property), and
(f)an offence under section 24 of that Act (detention of woman in brothel or other premises).