Ok, if you were paying attention previously, I asked you to stay tuned as we'd come back to the topic of practicing. How good or bad it is and whether it's worth doing. This is going to be a bit heavy so, sit down, get comfortable and put the wine down.
When students say they want to do private practice then it's all good providing it's "good quality", now what do I mean by that. Well simply put, what you practice must be what you've learned. No ifs & no buts, when we go on and on about mirrors there's a reason for it, firstly they are important and will get you that information to act on. Second the examiners are watching for it and if you don't do them, you fail, plain and simple. So your supervising driver should know (from yourself or your instructor) what it is you need to be doing, they may have forgotten after all these years. You are only cheating yourself if you don't do it.
On to the supervising driver, you are legally responsible for what the learner does. Yes, really. You have a full licence, they don't. Whatever they do wrong from a legal standpoint is your fault. So there are a few rules to abide by. The obvious one is you have to have a valid, full driving licence, if you don't or you have had it suspended you cannot supervise a learner driver (you must be over 21 years of age and held a full licence for at least 3 years.). So if you're banned from driving it's a no from the law.
Hangover? No way. You may still be over the drink drive limit and you are supervising the learner and may need to take control or drive, you have to be in a fit state and this applies to drugs also.
Mobile phone? Again no. Not even an instructor should have his/her phone in their hand while instructing, let alone use it to update a post, LOL. Oh, my, word. I typed LOL. Never again.
Have a nap? No. Hell no! How will you know what is going on if you're catching 40 winks. You are the one in charge, if you can't explain to the police officer how the collision happened because you were napping then you're in for a bad time.
Your car must also be road legal. Insured for both learner & driver, have current and applicable VED and an MOT if needed. Tyres, lights etc must all be good. FLOWERY checks are important. No, we aren't putting flowery decal on the car, quite simple you should check,
Water (coolant and windscreen),
Rubber (tyres & wiperblades),
You. (Are you fit to drive?)
So make sure you know the rules before sitting in the car with the learner and ask, what it is you should be doing with them? just "driving around" is good but what must they do to pass. If you aren't sure, ask.