The registered keeper is a family member. I am a named driver. My housemate was helping me move the wardrobe.
The registered keeper has full responsibility for paying or appealing a PCN; who was driving the vehicle at the time is irrelevant. However, the registered keeper can authorise a person to act for them in submitting representations or attending at an adjudication, (personally or by phone). If, however, the case is lost, the registered keeper is responsible for payment.