The DVSA has rebranded its driver education website. It is now easier to use and has a variety of learning aids. It has information for theory test candidates and is a government sponsored website. https://www.safedrivingforlife.info/
It has a vast resource of theory information including practice tests for theory question and hazard perception training. When you click through via the link on the image you should see a similar image on the new page
As you approach your driving test, there is a lot of good advice and information for test candidates, and what comes after you pass
Creating you own account is free, and will enable you to track your progress