Good to hear that you are all ok.
I thought the police would seize un taxed vehicules after an accident, especially if a roadside check did not show it was insured. Bet he is also breaking the law regarding the use of red diesel. I know one farmer who had an accident his machine was removed by the police in May, he has no idea when he will get it back, it had no mirrors. I wonder which customs and excise office covers that area.