Could take longer
I had one guys log book and new IMC rating turn up in the post at my home!
The CAA were very keen for me to send it back to them but I decided having phoned the owner of the log book to send it to him direct.
The cost to me was the same to send it to him or the CAA and it was the only way to garantee that the CAA did not send it to the wrong place for the second time!