The mental element for aiding the commission of an offence under s 7(c) of the Criminal Code (WA) is knowledge in general terms of the offence being or likely to be committed, not an intention that one's conduct aids the commission of the offence. A person who takes legal advice on how to comply with the Builders' Registration Act and then acts contrary to that advice cannot rely on the s 24 defence of honest and reasonable mistake of fact. Building contracts entered into in the name of a registered builder who has given no authority and has no involvement are properly characterised as contracts of the unregistered entity that actually negotiated and performed them.
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