27   Service of documents on Tribunal

(1)  A document may be served on the Tribunal by leaving it at, or by sending it by post to:

(a)  the office of the Tribunal, or

(b)  if it has more than one office—any one of its offices.

(2)  Nothing in this section affects the operation of any provision of a law or of the rules of a court authorising a document to be served on the Tribunal in any other manner.