llanfairpg, using unqualified 'trainees' or 'experienced pilots' for conducting any such checks sounds like a disaster waiting to happen..... Not just for the pilots concerned, but also for whoever dreamed up such a daft idea.
You are right it is a daft idea and I dreamt it up. I like encouraging people to become flying instructors and to take part. Most importanly it allows some of the training captains who fly with us with over 10,000 hours to check people out rather than use an instructor with a few 100 hours P1.
Remember what I said--at the discretion of the CFI, thats me!
Billy--I think BOSE was just asking if you have written confirmation from the CAA--verbal comment is not worth much. I do not believe there is a definitive answer to this and everything is subject to interpretation.