I am looking to book a Brittany Ferries return service from St-Malo (France) to Portsmouth with a car, however it is not registered to my name.
I do have the owner permission (I can have a signed letter from them if needed) to do that trip with the car.
I have never taken a car-ferry before, so I don't know if, at boarding, they would ask to see the registration (nothing is mentioned on their website), and if so, would fact that the registration certificate names differ deny me boarding?