Article 5 Service of documents

any notice or other document is required to be given or sent to the Veterans Agency, that notice or document shall be treated as having been given or sent on the day it is received by that Agency; and

any notice or other document is required to be given or sent to any person, that notice or document shall, if sent by post to that person's last known address, be treated as having been given or sent on the day that it was posted.