Spoke to the local Nick about a hour ago, there quiet happy for me to pop in so they can 'Log' the incident and give me a reference number. Did ask me if any other witnesses, to which my response was, No cause I had to leave the area in order to follow the other vehicle, So my word against theirs.
Also spoke about the failure to stop bit, but was told this would be logged and looked at but was told He did stop in the end and was prepared to give details.
Definitely no fault from my part, as I was already going over the mini runabout when He drove straight through a give way from my left, looking very much like a 'Just needs to go the your Insurance Issue'.
Fairly certain Im not going to hear from the other driver again or their Insurance Co. so need to the numbers now, Make a claim through my Insurance, No Claims, Excess, and hope that they track Him down and it doesn't go a 50 / 50, etc versus a FL Z157 NS Wing, Side Indicater and Trim. Bit of a No Brainer really. 
Yes, I’m not surprised by that at all, that's why there's so much muppetry on the roads nowadays and, as a consequence, why insurance premiums are so high.
It’s all too easy for the police to discharge their responsibility by adopting this ‘let the insurance sort it out’ attitude - what this really amounts to is bare-faced dereliction of duty and buck-passing.
In what seems to be an obvious case under the following;
Road Traffic Act 1991
2 Careless, and inconsiderate, driving..
For section 3 of the M2Road Traffic Act 1988 there shall be substituted—
“3 Careless, and inconsiderate, driving..
If a person drives a mechanically propelled vehicle on a road or other public place without due care and attention, or without reasonable consideration for other persons using the road or place, he is guilty of an offence.” (The failure to stop being of a technical nature would be disregarded)
I would say that whether or not the circumstances surrounding the incident are considered by anyone to rest on the basis of ‘one word being against the other’, I would have thought that the whole point in investigating the matter would have been to uncover, on foot of the evidence collected, just what happened to cause it.
I would suggest that, had you breezed through the GW sign colliding with a police vehicle as a result, you would have been written-up for a Section 2 and the notion of ‘leaving it to the insurers’ wouldn’t even have entered the equation.
Being an awkward big whore I wouldn’t have taken that from my local nick – but then, knowing the form, I’m perhaps in a slightly better position to give Five O grief when they need to get it.
Is it any wonder that so many people have lost confidence in the police?
It was a rotten thing to have happened Z and I hope you get it sorted out without too much bother or expense.