I would be very careful, the last accident I had (which was not my fault) my insurers told me I would loose my no claims until the claim was finally settled.

I thought this would not take long, but it was 3, yes three years before the other parties insurers backed down the day before court and admitted liability.

With hindsight I, like Colin would sue the other driver and then it is up to the other driver to claim against his own insurance which is then his problem if they drag their feet for three years.

Graham