Any person who without planning permission—
shall be guilty of an offence.
Any person who contravenes any requirement of an order under paragraph 5 or 6 of that Schedule or who causes or permits any requirement of such an order to be contravened shall be guilty of an offence.
Any person guilty of an offence under this section shall be liable—
It shall be a defence for a person charged with an offence under this section to prove that he took all reasonable measures and exercised all due diligence to avoid commission of the offence by himself or by any person under his control.
If in any case the defence provided by subsection (4) involves an allegation that the commission of the offence was due to the act or default of another person or due to reliance on information supplied by another person, the person charged shall not, without the leave of the court, be entitled to rely on the defence unless, within a period ending seven clear days before the hearing, he has served on the prosecutor a notice in writing giving such information identifying or assisting in the identification of the other person as was then in his possession.