I'm pretty sure attempted assault won't wash - no way of a witness seeing definitively the difference between that and someone just driving into the back of me...
If it's not assault, it's definitely leaving the scene of an accident.
As a word of advice to anyone getting this kind of treatment in th future. If you come off the bike and you have witnesses with a drive off, say you've bumped your head and ask for an ambulance. Any RTA requiring an ambulance should warrant police attendance. Make the lazy sods come to you for the form filling.
If it's not assault, it's definitely leaving the scene of an accident.
As a word of advice to anyone getting this kind of treatment in th future. If you come off the bike and you have witnesses with a drive off, say you've bumped your head and ask for an ambulance. Any RTA requiring an ambulance should warrant police attendance. Make the lazy sods come to you for the form filling.