s 23 Service of notice, etc.
Any notice, document or other correspondence shall be deemed to be sufficiently communicated to the holder of a licence, permit or certificate if such notice, document or correspondence— (a) is personally served on the person in charge at the premises where the printing press is located, where the publication is published, or upon the agent appointed under subsection 6(3); (b) is sent by registered post to the address of the holder given in the licence or permit or the agent appointed under subsection 6(3); or (c) is published in the Gazette.