Originally Posted by Biggles
I don't have a radio competency certificate either (I don't know what it is)
The SRC (Short Range Certificate) and the Restricted VHF Certificate both actually detail 2 things if you look at them. Firstly, the have "Maritime Radio Certificate of Competence" on the front, then on the back "Authority to Operate".
There are instances where someone might get the "Certificate of Competence", but not the "Authority to Operate" (for example if they are under 16).