Good to hear your injuries are minor; best wishes.
Please do pursue it; bust the Police's balls; do your own investigation, find CCTV along the way the driver must have taken.
It is definitely worth it: if you manage to get him, and he loses his licence for a year, the roads will be safer for all of us.
If he is working for a firm, hassle them, make sure they take him off their books.
Again best wishes for your knee.
It is up to us to end this level of complacency for these vile crimes.