Section 5

Cancellation, suspension or variation of the conditions of any licence or permit, issued by virtue of an order, may be effected by endorsement thereof on the licence or permit, or by service of a written notice of the cancellation, suspension or variation on the holder of the licence or permit, and any such service shall be good service if the written notice is left with the holder of the licence or permit, or is left with any adult person at the usual or last known place of residence or business of the holder, or is served on the holder by post at his usual or last known place of residence or business, or if, in the case of a permit, it is left with any person having the possession, custody or control of the goods to which the permit relates.

If any such licence or permit is cancelled or suspended the holder thereof shall, unless it has otherwise been lawfully disposed of, forthwith surrender it to the officer by whom it is so cancelled or suspended and, in default thereof, shall be guilty of an offence and shall be liable on conviction to a fine not exceeding $1,000.[6