28. An offence under—
section 15 (meeting a child following sexual grooming etc.),
section 47 (paying for sexual services of a child) where subsection (3) or (4) of that section applies,
section 48 (causing or inciting child prostitution or pornography),
section 49 (controlling a child prostitute or a child involved in pornography),
section 50 (arranging or facilitating child prostitution or pornography),
section 57 (trafficking into the UK for sexual exploitation),
section 58 (trafficking within the UK for sexual exploitation), or
section 59 (trafficking out of the UK for sexual exploitation).