Thank you for the answers. I just wasn't sure what the law was regarding it, what with me not being an instructor, For example, even if I had a car with dual controls fitted, I wouldn't allow someone without a driving license to drive it. NoFlyNoMore - Why are you concerned that I have to ask this question? I don't recall ever being briefed on 'If you take a non-licensed passenger, feel free to let them fly the plane'... Do you?
Letting him do the W&B and the walkaround etc (with me or after me) is a good idea, so thank you for that. By S&L, I probably didn't mean just that, I was more alluding to not having him do the circuits and the radio comms etc. It was my bad wording, apologies.
Thank you Sam