I clobbered some rubble on the M4 ealrier this year, an djust handed the whole mess to my insurers to sort out.
2 Rays, 2 tyres, 2 sets of susepension, exhaust, and Cat later.... The bill came to somthing like £8500. (New Under car really...)
Now my problem is changing Insurers... but have you tried them? Let them sue the council... they are used to it
just a thougth!!