The drivere ecieved the attached PCN for parking on the pavement while unloading and delivering goods to a nearby restuarant.
OP, this process is person-specific. The registered keeper or hirer receives a postal PCN, as here, not the driver who, as such, has no part in proceedings.
So, to whom is the PCN addressed, the registered keeper or the hirer?
As regards the substance of matters, the recipient only has the possibility of the following as a defence:
[A contravention does not occur if the vehicle was parked]:
(d)for the purpose of loading or unloading goods [F6for a period not exceeding 20 minutes or such longer period as the council may permit], and—
(i)the loading or unloading of the vehicle could not have been satisfactorily performed if it had not been so parked; and
(ii)the vehicle was not left unattended at any time while it was so parked.
Over to you for clarification pl.