Booking the Theory Test:
The current cost is £23 and there are various options available for booking your theory test. The fastest way is to book via the nidirect.gov.uk website. You can also book by phone. Theory test booking line: 0845 6006 700. Lines are open from 8.00 am to 12.00 pm, Monday to Friday, except on bank holidays. You’ll need a valid debit or credit card for payment (Visa, Mastercard, Delta, Visa Electron and Switch cards are accepted).
Alternatively you can book by post too. Just download a form online or pick one up from the theory or practical test centres. You must pass the theory test before you can apply for your practical test. The theory test is in two parts, a multiple choice section and a hazard perception test. Once you have passed your theory test you have two years in which to pass the practical test.