Certification of plans, etc.
48.—(1) DLRL shall, as soon as practicable after the making of this Order, submit copies of the book of reference, the deposited plans and the deposited sections to the Secretary of State for certification that they are true copies of, respectively, the book of reference, the deposited plans and the deposited sections referred to in this Order, and a document so certified shall be admissible in any proceedings, as evidence of the contents of the document of which it is a copy.