All notices required or authorised by or under these Regulations to be given must be in writing, unless it is otherwise provided, or the court allows the notice to be given in some other way.

Where in proceedings under these Regulations a notice is required to be sent or given by any person, the sending or giving of it may be proved by means of a certificate by that person that he posted the notice, or instructed another person (naming him) to do so.

A certificate under this paragraph may be endorsed on a copy or specimen of the notice to which it relates.