What are the RestrictionsA probationary driving licence holder is subject to additional driving restrictions on top of existing ones applicable to ordinary motorists. Specifically, he is: required to display a “P” plate at the front and rear of the vehicle he is driving (in the case of a private car or light goods vehicle, display of the “P” plate on the windscreens is also acceptable, but the “P” plate must be displayed on the left-hand side of the windscreens); not allowed to carry any passenger on the motor cycle or motor tricycle he is driving (applicable to motorcyclists only); not allowed to drive at a speed in excess of 70km/h even on roads with speed limit above 70 km/h; not allowed to drive on the offside lane of expressways where there are 3 or more traffic lanes. This is what I found on transport department website about P plates.
I know there are certain roads and times of day that L plates cannot enter. However, there does not appear to be any restrictions for P plates on Route Twisk. Sorry but I did not go through the P plate system so am not 100% sure.