Section 79A

A person’s mistake of law or ignorance of the law is not a defence to a charge for an offence unless it is otherwise provided by written law.

Despite subsection (1), when a mistake of law negates the fault element required to establish liability under an offence, then to avoid doubt, that offence is not made out.Illustration A mistakenly believes he has in law the right to deprive Z of a watch. A intentionally takes the watch out of Z’s possession without Z’s consent while labouring under such mistaken belief. A has not committed an offence of theft as he did not intend to dishonestly take the watch out of Z’s possession.