Has anyone tried it? Was it difficult, how long did it take, how well did it go? Interested in doing this myself as a 'back up' if I don't get into the universities that I want to with the subjects I will take - but I don't like Maths enough (compared to the other subjects) to imagine I'd do well/enjoy it while doing another 3 subjects. And it's fairly easy to do in a gap year, with no coursework.