Are the police actually investigating, i.e. speaking to the council?
OK, these no win-no fee solicitors advertise in Cycling Plus. I'd call (not email), explain the situation and see if you have any case
www.bikeline.co.uk (0151 348 4400)
However, looking at their website...
What if the other driver is uninsured, or didn't stop?
If your accident has been caused by someone who has driven off, or has given false details and is not traceable, or is uninsured,
you can still claim. Your claim will be dealt with by the Motor Insurers' Bureau. The M.I.B. is a body set up to provide a central fund for compensation of victims of accidents involving either uninsured or untraced drivers.
However, the way in which your claim is dealt with (and what you can claim for) is different in each case.
http://www.mib.org.uk/Home/en/default.htm