Renewal
It seems to depend upon who you talk to as I was told by another organisation, with whom I had not flown and after the event Grrr ! that I could have got my certificate signed as soon as I had completed the 12 hours and one hour instruction. Seemed logical to me at the time.
I fell foul of the renewal within 3 month of expiry having done the flying and the one hour. I then waited for the three month to arrive but in the process letting my CAA medical expire on purpose only to find that I needed that to be current in order for the certificate to be signed off - which did not seem logical - needing a medical to do paperwork ???