A G.P.O. trailer asks people to leave a forwarding address when they move.
Item title reads - A message from the G.P.O. Have you left your house empty?
A postman knocks on a door then sees the sign saying 'gone away'. M/S of sorting office. The postman shows letter from soldier on active service and one from prison camp saying they will worry if they don't get replies to them. He goes to the assistance board for help, eventually they go to the returned letters office. Postman asks for people to have their mail redirected or leave a forwarding address.
Intertitle - 'If you have left your house empty, give the post office your new address.'