logbook loans uk - Logbook loans are secured on the logbook of the borrower’s vehicle. Logbook in legal parlance is the registration form V5. A logbook has entries regarding the current registration mark, VIN number or the chassis number, and details about the registered keeper of the logbook. The logbook loan requires the borrower to keep the logbook with the lender until the loan amount has been repaid in full. logbookloans.