5.—(1) A notice under paragraph 2(1) must be served by the regulator—
(a)by delivering it to the person to whom it is to be sent;
(b)by leaving it at that person’s usual or last known place of business or abode;
(c)by sending it, addressed to that person at that person’s usual or last known place of business or abode, by a registered post service or by a postal service which provided for the delivery of the notice by post to be recorded; or
(d)if the person to whom it is to be sent is an incorporated company or body, by delivering it to the secretary, clerk or other appropriate officer of the company or body at its registered or principal office or sending it, addressed to the secretary, clerk or other officer of the company or body at that office, by a registered post service or by a postal service which provides for the delivery of the notice by post to be recorded.
(2) Any notice which is sent by a postal service in accordance with the preceding paragraph to a place outside the United Kingdom must be sent by air mail or by some other equally expeditious means.
(3) In this Schedule “registered post service” and “postal service” have the meaning given in section 125(1) of the Postal Services Act 2000(1).