Noted and bookmarked. Any latest update on it?

Police report are always needed for every insurance claim.
But as you also don't know the details of the people who knocked you. Now you need to compare the cost:

1. Whether claim own insurance and lose NCD is more worth than paying own cash to fix your car.
2. Conduct study whether Own Damage Knock for Knock (ODKFK) applies for your incident or not.