In these Rules, a reference to a person being served with a notice is a reference to service on that person being effected°X
(a) by delivering it to that person personally;
(b) by sending it by ordinary post to that person°¶s last known residence or place of business;
(c) where the person is a body (whether corporate or unincorporate), by delivering it to the secretary or an officer of the body at its registered office or principal office or by sending it by ordinary post to that secretary or such an officer at that office; or
(d) where the person is acting by a solicitor, by delivering it at, or by sending it by ordinary post to, the solicitor°¶s address for service.