IS it best to take no books?
I wouldn't worry too much about this, Elaine. Generally speaking, it's rare for school work to be a decisive factor.
If you don't bring work with you, no one is going to complain.
If you do bring work with you, bring routine work in exercise books, not carefully selected pieces of work. English, Maths (and perhaps Science) exercise books would be a good choice because these relate to KS2 predictions and to the quartiles specified on the headteacher's statement. Don't worry about teachers' comments about effort or presentation - the panel will be much more interested in achievement.
If you were to bring the English exercise book but not the Maths, the panel might be suspicious, so it's best to offer a reason, e.g. "The maths book was needed at school today."
Hope this helps