(1)In proceedings for any offence under this Act it shall be a defence for the person charged to prove that he took reasonable precautions and exercised due diligence to avoid the commission of the offence.
(2)If in any case the defence provided under subsection (1) above involves the allegation that the commission of the offence was due to the act or default of another person, the person charged shall not, without leave of the court, be entitled to rely on that defence unless, no later than 7 clear days before the hearing, he has served on the prosecutor a notice in writing giving such information as was then in his possession identifying or assisting in the identification of that other person.