When you book your theory it always takes atleast 2 weeks till ure test day so you have time to practice that, take alook at the hazard preception i found it really easy so never revised that spend most my time on the multi choice questions, they say its easy.. tbh it is, but i failed only last wednesday lol, twas sad and a waste of £30 but its just the choice of questions u get on the day i guess.
Just book it now, you get 2 weeks in advance to practice.