Steve,
In reply to your questions mate, I have some Legal information for you. (don't ask me how i know, that would be telling what i do for a living! lol)
Right, under the Road Traffic ACT 1968, a person who is involved in a road Traffic Accident MUST -
1) STOP
2) Exchange details, (registration plate and name of driver is only required by law)
if it was a PI (personal injury) accident, then insurance certificate would also have to be shown.
3) Any third party witnesses must be obtained
Soooo , that means that either one of you would have to have failed to comply with that. So, techincally he would have had to ring "999" and tell the police that a vehicle had "failed to stop" that vehicle being yours, so if there is also no evidence that he rang 999 or even went into a police station to report a vehicle failing to stop, that would only heighten suspicion of the claim.
All I can advise that you do, is tell your insuance company to ask the other driver to fully describe you as a driver, and what you was wearing, andy words exchanged, and also ask to see a copy of the original note, as to where he wrote down your vehicle registration number, if you did fail to stop!
right ... that's enuff, .... contact me if u need any more!
Ta!