IIRC if you were hurt he had a legal responsiblity to call the police. If you had a witness contact them then go to the police with the details of the accident. Let the insurance company know that you have contacted both the police and the witness and that you are not happy. Then tell them you feel it is getting too complicated so you think you need to engage your own solicitor. Most household insurance has a free legal advice/cover option - do you have that on your's?