Do you have a case law reference for this, or is an opinion? The few policies I've seen make a distinction between the cover of a provisional driver and others. And given the fact that it goes to the skill of the driver being covered, I would expect it to be relevant in the context of "Utmost Good Faith".
Where? Show me an example in a policy wording. Utmost good faith has nothing to with whether you have cover depending on your licence type. You misunderstand the concept. Nobody said the that OP's friend said they had a full insteal of a provisional licence.
So if she fails to produce the documentation how should she proceed??? My expectation is that no insurance company will pay out if it's procedure is not followed. At this point she need to seek legal redress and of course the insurance company would be aware that there must be a problem, otherwise she simply show the licence... These questions are there for a reason, very often there is a problem with the licence and it gives them a possible opt out...
Jim.
Again you are misunderstanding the position here, the OP has indicated that his friend was not at fault here. Any issue with her licence does not apply here. The claim is not under her policy, the claim is under a third party policy. Even if she had no insurance policy, she is still entitled to indemnity under the third party's policy if the third party was at fault. And I have never seen an injured party have to provide a claim form to another insurance company.