hi,we're in Berks.The tests are NFER multiple choice.I'm worried that I might be getting carried away as usual and going too far which would be no bad thing usually I think if she can do it,but if all she needs is to be thoroughly competent in the basics of each topic then we should probably just be concentrating on that for now.
I live at the Bucks/Berks border and my son took the Slough test two years ago.
I think that being very competent with the basics is a good start, but you should make sure that you know the level of the questions that will come up by using practice tests (like the CDs) that are similar to NFER.
As the CDs were not out at the time, I used the IPS practice papers, and of course the NFER tests, but there are only 4 NFER tests, so they are best kept for assessment closer to the exam.
If you haven't already done it, try to read all the Maths topics. A lot of the comments are about the NFER papers.