Service of notice etc. how to be effected on any person otherwise than as owner or occupier of premises

When any notice bill, schedule, summons or other documents is required by this Act or by any rule, regulation or byelaws made there-under, to be served upon or issued or presented to any person, otherwise than as owner or occupier of any land or building such service, issue or presentation shall be effected -

(a) By delivering at some post office the said notice, bill, schedule, summons or other such documents under cover bearing the address of the person concerned and obtaining therefore a certificate of posting; or

(b) By giving or tendering to such person the said notice, bill schedule, summons or other such documents; or

(c) By both methods.