So the police conveniently leave off the dangerous driving, driving without due care and a lack of seatbelt. Typical. Not to mention the car is untaxed.
Dangerous driving is not allowed to be recorded as a criminal offence until the CPS have authorised someone to be charged with it. Not the police's rule, the government's.
Driving without due care is not a crime recordable offence.
Not wearing a seatbelt is not a crime recordable offence.
Common assault is crime recordable as soon as the victim discloses it, and as the 'most serious' offence in this matter is the one that it recorded. It does not mean the other offences aren't also considered.
I understand all that - but the one thing the video does not show is common assault, so why quote that?
Because the rules placed on the police by the government (Home Office Criming Rules of you want to Google it) dictate that is the matter that is recorded in this case, so that is the accurate reply.
If the police had said "driving without due care and no seatbelt", someone would have complained "what about the assault?!!" - probably you!