When a vehicle is sold, the protocol for the legal transfer to the new owner starts with the seller signing the certificate of title over to the buyer. The failure or inability to transfer title can temporarily leave the buyer without proof of ownership and the seller liable for the vehicle. A buyer who intends to sell the car shortly after making the purchase may elect to leave the original seller on record as the owner of the vehicle to avoid paying the sales tax. This practice is used by unlicensed car dealers to avoid having to be licensed as a dealer because of the number of cars they sell in a year.
In a nut shell, the Natis motor vehicle registration certificate is an official watermarked document that ultimately proves ownership of a vehicle. The Natis Vehicle Certificate of Registration is required when buying or selling a vehicle. Its a physical document containing information that has been logged by the Natis, the data on the certificate of registration corresponds to the information recorded by the traffic department. The document is unique, the certificate cannot be cloned. It can be photocopied and some shady character can probably attempt to fool you and I but they will fail miserably.
Bought a Harley with no logbook and DVLA doesn't recognise
A Special Notice see Section H2 will advise you when amendments to the electronic versions are published. Where a customer requests further information they should be shown via the MOT Testing Service or directed to the on-line version. AEs must ensure that all testing staff always have ready access to all current, relevant SNs and that all current Testers have read and acknowledged them. Customer information and leaflets are available in electronic format and may be viewed online and printed. There is no requirement for AEs to stock or distribute this information.