Can I sell a personalised registration separately from a Northern Ireland registered vehicle?

The safe sequence is normally to take the number off the car first if it is currently assigned, wait for the retention document and replacement V5C, then transfer the entitlement to the buyer through the proper process.

DVLA warns owners not to share scans or photographs of the V750/V778 publicly because someone with the entitlement details may be able to assign the registration.

The physical acrylic plate has little value by itself; the valuable part is the legal right to the registration number recorded by DVLA.

For NI motorists it helps to separate the registration number from the physical number plate. DVLA controls the legal registration entitlement and transfers; DfI/DVA applies NI vehicle-test standards to the plate that is actually fitted. Owning a V750 or V778 does not let you display the mark until it has been assigned, while a correctly assigned mark can still be illegal if the acrylic plate is wrongly spaced, obscured or made to the wrong specification. The practical result is that yes. You can sell the right to a personalised registration separately from the vehicle, provided you control the valid V750 or V778 entitlement and follow the DVLA assignment process. That prevents a rule written for Great Britain or the Republic of Ireland being applied automatically to a Northern Ireland case.