Certificate of giving notice, etc.
70.—(1) Where in any proceedings a notice or document is required to be given, sent or delivered by the energy administrator, the date of giving, sending or delivery of it may be proved by means of a certificate signed by him or on his behalf by his solicitor, or a partner or an employee of either of them, that the notice or document was duly given, posted or otherwise sent, or delivered on the date stated in the certificate.
(2) In the case of a notice or document to be given, sent or delivered by a person other than the energy administrator, the date of giving, sending or delivery of it may be proved by means of a certificate by that person that he gave, posted or otherwise sent or delivered the notice or document on the date stated in the certificate, or that he instructed another person (naming him) to do so.
(3) A certificate under this Rule may be endorsed on a copy of the notice to which it relates.
(4) A certificate purporting to be signed by or on behalf of the energy administrator, or by the person mentioned in paragraph (2), shall be deemed, unless the contrary is shown, to be sufficient evidence of the matters stated therein.