35.—(1) Any document purporting to be a document duly executed by a proper officer on behalf of the Tribunal shall, unless the contrary is proved, be deemed to be a document so executed or issued as the case may be.
(2) A document purporting to be certified by a proper officer to be a true copy of any entry of a decision in the register shall, unless the contrary is proved, be sufficient evidence of the entry and of matters contained in it.
36.—(1) Any document required or authorised by these Regulations to be sent or delivered to, or served on any person or authority shall be duly sent, delivered or served on that person:–
(a)if it is sent to him at his proper address by post in a registered letter or by recorded delivery;
(b)if it is sent to him at that address by facsimile, telex or other similar means which produce a document containing a text of the communication, in which event the document shall be regarded as sent when it is received in a legible form;
(c)if it is delivered to him or left at his address.
(2) If a notice of appeal is sent by registered post or recorded delivery, it shall be treated as if it had been received by the Tribunal on the day after the date on which it is received for despatch by the Post Office.
(3) An appellant may at any time by notice to the Tribunal change his address for service under these Regulations with effect from the date when that notice is received by a proper officer of the Tribunal.
37. Where the time prescribed by these Regulations for doing any act expires on a Sunday or public holiday, the act shall be in time if done on the next following day which is not a Sunday or public holiday.