2.11—(1) An initial writ, decree, charge, warrant or any other order or writ following upon such initial writ or decree served by a sheriff officer on any person shall be served–
(a)personally; or
(b)by being left in the hands of a resident at the person’s dwelling place or an employee at his place of business.
(2) Where service is executed under paragraph (1)(b), the certificate of citation or service shall contain the full name and designation of any person in whose hands the initial writ, decree, charge, warrant or other order or writ, as the case may be, was left.
(3) Where a sheriff officer has been unsuccessful in executing service in accordance with paragraph (1), he may, after making diligent enquiries, serve the document in question by–
(a)depositing it in that person’s dwelling place or place of business; or
(b)affixing it to the door of that person’s dwelling place or place of business.
(4) Subject to rule 2.18 (service of schedule of arrestment), where service is executed under paragraph (3), the sheriff officer shall, as soon as possible after such service, send a letter containing a copy of the document by ordinary first class post to the address at which he thinks it most likely that the person on whom service has been executed may be found.