A person commits an offence if he intentionally administers a substance to, or causes a substance to be taken by, another person (B)—
knowing that B does not consent, and
with the intention of stupefying or overpowering B, so as to enable any person to engage in a sexual activity that involves B.
A person guilty of an offence under this section is liable—
on summary conviction, to imprisonment for a term not exceeding 6 months or a fine not exceeding the statutory maximum or both;
on conviction on indictment, to imprisonment for a term not exceeding 10 years.