I would go to the police station, expain the situation to them and find out what damage was done to the other car, if it was a lot, and yours had no damage get the officer to look at your car and make a report on it, if he will, because if theres a lot of damage to his car, then there should be damage to yours of some sort, and the officer can be a witness for you saying that in his oppinion there should have been X amount of damage done to your car in this alleged accident, but there is not any and get a good solicitor, could go to a solicitor first, don't forget first half hour is usualy free