In article , dave F wrote:

Pending violation fine - sale of goods act?

No because the violation fine is against the registered keeper
at
the time the offence was committed. The fine doesn't 'travel'
to
the new owner along with the car

What if the new owner does not re-register the ownership?

The 'old' owner does that by sending the V5 slip back to DVLA.
Even if he didn't, he would still show as the registered keeper
at the time of the offence so owuld be chased for the fine