He would log 2hr as Commander (P1C), I would log 1hr P1 with his name as Pilot in Command, he would countersign my logbook entry.
Cor!! So, if, after you'd landed, filled in your personal logbooks and gone home, and the CAA got onto you about the air prox that you'd been involved in, both of you could say "Not me guv, he was in charge". I like it.
Steve R