Any enactment which requires or authorises a document or other thing to be sent by post (whether or not it makes any other provision in that respect) shall not be construed as limited to requiring or (as the case may be) authorising that thing to be sent by the postal system of the Post Office company.

Any enactment which makes any other provision in relation to the sending of a document or other thing by post or to a thing so sent shall not be construed as limited to the sending of that thing by the postal system of the Post Office company or (as the case may be) to a thing sent by that system.