State for certification that they are respectively true copies of the book of reference, the works and  land plans and the traffic regulation plans referred to in this Order; and a document so certified is  admissible in any proceedings as evidence of the contents of the document of which it is a copy.  52. —(1) A notice or other document required or authorised to be served for the purposes of this  Order may be served—  (2) Where the person on whom a notice or other document to be served for the purposes of this  Order is a body corporate, the notice or document is duly served if it is served on the secretary or  clerk of that body.  (3) For the purposes of section 7 (reference to service by post) of the Interpretation Act 1978( a )  as it applies for the purposes of this article, the proper address of any person in relation to the  service on that person of a notice or document under paragraph (1) is, if that person has given an  address for service, that address, and otherwise—  (4) Where for the purposes of this Order a notice or other document is required or authorised to  be served on a person as having any interest in, or as the occupier of, land and the name or address  of that person cannot be ascertained after reasonable enquiry, the notice may be served by—  (5) Where a notice or other document required to be served or sent for the purposes of this Order  is served or sent by electronic transmission, the requirement is taken to be fulfilled only where the  recipient of the notice or other document to be transmitted has given consent to the use of  electronic transmission in writing or by electronic transmission.  (6) Where the recipient of a notice or other document served or sent by electronic transmission  notifies the sender within 7 days of receipt that the recipient requires a paper copy of all or any  part of that notice or other document, the sender must provide such a copy as soon as reasonably  practicable.  (7) Any consent to the use of electronic transmission given by a person may be revoked by that  person in accordance with paragraph (8).  (8) Where a person is no longer willing to accept the use of electronic transmission for any of  the purposes of this Order—  (9) This article does not exclude the employment of any method of service not expressly  provided for by it.  ( a ) 1978 c. 30.  33 (a) that person must give notice in writing or by electronic transmission revoking any consent  given by that person for that purpose; and  (b) such revocation is final and takes effect on a date specified by the person in the notice but  that date must not be less than 7 days after the date on which the notice is given.  (a) addressing it to that person by name or by the description of “owner”, or as the case may  be “occupier”, of the land (describing it); and  (b) either leaving it in the hands of a person who is or appears to be resident or employed on  the land or leaving it conspicuously affixed to some building or object on or near the land.  (a) in the case of the secretary or clerk of a body corporate, the registered or principal office  of that body; and  (b) in any other case, the last known address of that person at the time of service.  (a) by post; or  (b) with the consent of the recipient and subject to paragraphs (6) to (8), by electronic  transmission.  Service of notices 