Just a quick information to say that you can access the quizzes from your iPad by uploading a flash browser called Appsverse Photon. It costs £2.99. But, might be worth it if you do use a lot of iPad flash browsing. The same app is available for Android tablets. If you know of other browsers which work, please let us know.
I have tried Puffin browser and iSwifter. The Puffin browser was very quick for general browsing, but was unable to load the quizzes unfortunately. I have also tried iSwifter, it worked, but the quality of the images wasn't great. All a bit fuzzy.