If an application is not in order the registrar may raise such requisitions as he considers necessary, specifying a period (being not less than twenty F1working days) within which the applicant must comply with the requisitions.

If the applicant fails to comply with the requisitions within that period, the registrar may cancel the application or may extend the period when this appears to him to be reasonable in the circumstances.

If an application appears to the registrar to be substantially defective, he may reject it on delivery or he may cancel it at any time thereafter.

Where a fee for an application is paid by means of a cheque and the registrar becomes aware, before that application has been completed, that the cheque has not been honoured, the application may be cancelled.