Note: A foreign driving licence holder can not supervise a UK provisional licence not matter how long they have held a licence, you have to hold a full British licence to do that.
A supervising driver can not be banned from driving or it would be illegal for you as a provisional licence holder to have them sitting next to you.
Ignorance is no excuse in the sight of the law, so make sure you are fully aware of the conditions of your provisional license.
Q: My supervising driver has lost or misplaced their licence, can I still drive on a provisional licence with them sitting next to me if insured on the car?
A: As long as you are sure that the supervising driver next to you has held a full UK licence for over 3 years in the category of vehicle you are driving. Then you are legally OK. If stopped by the police, they can easily check the DVSA database once your supervisor confirms their identity and address, so this shouldn't be a problem. If involved in an accident, then things could get a little complicated as you might need a driver number or even a copy of the licence to claim on the insurance policy, so it is always a good idea to ask them to get a replacement as soon as possible to avoid problems.
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