If you are a learner driver you must take and pass your theory test before you book your practical test. If you already have a driving licence you might not have to take another theory test if you want to start driving a different vehicle.

You will need to take a theory test if you want a licence for a new category of vehicle, for example, if you have a car licence and you want a motorcycle licence you will need to take a theory test.

If, however, you want to upgrade within a vehicle category you will not normally need to take a theory test, for example, if you have a full automatic car licence and you want a manual car licence you will not have to take a theory test.