Go to the copshop in question and ask to speak to Mr Detective over there. It might be someone wanting to extort due to knowledge of the case. If it's legit, go to them, don't entertain them coming to you.
Sounds like your friend's fault, both because of unlicensed and right of way to other person.
He/She/You are in for a tough time ahead. My insurance bills me double excess if someone has an accident in my vehicle who is under 25 and license for less than 2 years. Unlicensed, I doubt they would...
Rain did not exist, therefore they could not possibly have sold it.
Rain exists because of the WBS failure and if BL did not sell their stake, Rain probably would not have come to fruition due to its required stakeholders having never bought into it.