Unlucky,
I your insurance cover includes legal assitance, I suggest your make a claim, get the solicitors to pursue the claim on your behalf.
My brother had a similar case where he was hit and the driver did not stop.
It took a while, but the police did track him down, and his insurance coy has now agreed to pay for the damages.
As long as you have a case against the 3rd party, your insurance will not be affected. The fact that the driver did not stop has already put things in your favour.
You will have to persist, in my brother's case it took over 5months!