You will do better than I as you have the plate number.
Did you call the police at the time? I now know that was my biggest mistake, I failed to (assuming that having called an ambulance and the ambulance notifying the police that they would catch up with me in A&E - they never did, and then the struggle to get their attention started).
Document everything. I mean everything. Every small cost incurred, every injury or report made. Take photos of X-Rays, record in detail any visits to the doctor or a hospital, then when, where, what happened, etc.
If you are a member of British Cycling then you should be insured.
If you house insurance covers it you will be insured.
Speaking to Leigh Day is definitely recommended.
Good luck, and heal up... glad to hear that you are physically sound.