Well, I found that in O/N 06 there were a lot of theory questions, much more than other papers, which you can test yourselves with.
Also for limited liability companies I suggest you do the specimen paper 2, which has a good and thorough question on the topic, and if you want more practice you should do O' Level papers.
I also wanted to know, does anyone have any suggestions as to which questions I should do regarding hard income and expenditure account questions, and other various topics? Any questions you found hard on any topics would be nice to know, so that I could test myself with the cream of the crop.