Offences Against the Human Body
(1) Knowingly (or with reason to believe) engaging a TRAFFICKED CHILD for sexual exploitation is punished with 5-10 years' rigorous imprisonment plus fine. (2) The same conduct toward a trafficked adult is punished with 3-7 years' rigorous imprisonment plus fine.
This targets the DEMAND side of sex trafficking - someone who knowingly engages the services of a trafficked person for sexual exploitation, even if they weren't involved in the original trafficking itself, faces serious liability, with enhanced penalties specifically for exploiting trafficked children.
A customer who knowingly engages a trafficked person for sexual exploitation - even without having participated in trafficking them in the first place - commits this separate, serious demand-side offence.