Incorrect!

What should you do if you're being followed by an ambulance showing flashing blue lights?

Pull over as soon as it's safe to do so
Correct answer
Accelerate hard to get away from it
Maintain your speed and course
You selected this answer
Brake harshly and stop well out into the road

DVSA theory test explanation

Pull over in a place where the ambulance can pass safely. Check that there are no bollards or obstructions in the road that will prevent it from passing.