You must drive at a safe and suitable speed for the conditions.
You will get marked if you drive slowly when it's safe to drive at the speed limit because:
Make sure you are aware of the conditions for the road you are driving along e.g. weather, other traffic, pedestrians, corners, road surfaces, parked cars etc.
Vehicles become a hazard to other road users if they are being driven too slowly - it can also lead to other drivers attempting to overtake
Booking the driving test isn't hard, however, it's a good idea to have the correct documents at hand.
The same information is required whether booking online, over the phone or by post