If the scooter is still in your name aren't you liable for licensing fees until it's scrapped?
My theory is that he sold the bike for tik, papers and all.
YOU will have to complete a lost documents form, apply for a duplicate cert. of reg., then pay the outstanding license fees, then de-register the bike.
THEN ONLY report it stolen - otherwise you will enter the pits of administrative hell, if you do it the other way round!!!
Seeing that there is now money outstanding, don't I still own it until fully paid for????
No..? You did not mention any outstanding payment for the sale of the bike.
Because YOU did not hand in the yellow change of ownership form, unfortunately the admin now lands in your lap, even though he is actually liable for those costs. This is why it is the seller's responsibility to hand in the completed yellow form, to absolve themselves of any further liability for fines, license fees, or other.
Regardless of who's name the bike is registered in, HE is still the legal owner now. IF the bike is recovered and you keep it, then that will be a case of theft & you could stand to get a criminal record, if proven guilty.
You want to sleep well and go to heaven one day :-)