83.

If a person has not provided an address for service, a document may:

(a) in the case of a company, be delivered personally or sent by post to the secretary of the company at the registered address or principal place of business of the company;
(b) in the case of a partnership, be delivered personally or sent by post to the last known address of any one of the partners;
(c) in the case of any other person, be delivered personally to him or sent by post to the last known address of that person.