Get the details of the repair(s) i.e the repair centre like a receipt or info on the buyback from the insurance company should that have been the case, check why its not recorded on HPI, might be a reason... Also if the person who owns the car is the person that has had the accident/repairs done then it won't show on the logbook until it comes to you. Make sure you get the VIC test document should it need it.... very important.
