I am retired and pursuing maths out of interest, not for exams. I cannot comment on the suitability of this book for current A Level syllabuses, though my impression is that on at least some topics it takes one well into university-level maths. It covers a lot of ground, including matrices and linear algebra, further calculus, conics, advanced curve-sketching, and an introduction to group theory. The pace is in places fairly breakneck, and one has to concentrate hard. There is a plethora of exercises - far more than anyone could reasonably be expected to complete - with answers at the back, but not the workings for the answers. Compared with the authors' core A Level maths book, this is much less suited for someone like me not studying for exams. This is because much of the book is taken up with quite complicated computational techniques rather than with concepts. Another defect is that it often just refers back to the Core Course book rather than giving a sufficient recap of what that book said on the particular aspect of maths. So the book is not free-standing: unless you have studied the authors' (excellent) book on the Core Course, you are likely to have some difficulty in places.