When appling by post for membership, for me and my son , I sent them both off in the same envolpe, but when they came back the stamp addressed envolope i gave was not enough, due to the two books i was sent. you will need two first class stamps. I waited A week for the royal mail to sort it out and they charged me £1.17 for being 17p out.
So if you are waiting for your membership its at the sorting office Maybe
