Thanks Rog,As I understand it, that's the whole point of basic Road Traffic Acts insurance - to cover the rider against third-party liability. I believe it's not possible for an insurance company to repudiate a third party claim even if the bike proved to be 'faulty'.
Rog.
If the rider managed to get RTA insurance I would worry that if there was a fault with the bike which was proved to have caused the accident, the rider's insurers would look to bike the supplier to reclaim their loss.
There will be an incident involving an S Pedelec sooner or later, if all the parties involved are not adequately covered there will probably be serious consequences, and of course a lot of bad publicity.
Al the best
David