St Kevin's College is very accessible, in fact it virtually has its own private train station.
The teacher at that school is very experienced and a damn good bloke.
Now, while I am at it, and without knowing what each individual's reasons for doing UMEP Maths is, I can offer the follwoing general advice for ambitious students who want to do well in the subject.
1. It aint easy. The maths is a few notches more advanced than Specialist Mathematics
2. No matter how good your teacher is, this is not the sort of subject that your teacher can fully teach you in the small number of available contact hours. 90% of your learning will be self-directed. I know of one student who never attended a single lesson, and yet got full marks at the end-of-year exam.
3. UMEP maths is essentially a course in Linear Algebra (Matrices, Vector Spaces), and I strongly recommend you get your hands on the Anton & Rorres textbook to get the required insight into these topics. Some other bits and pieces are covered as well such as Number Theory, Mathematical proof (esp Induction), Complex Numbers (exponential form) and some multivariate calculus. For those latter topics you can just about get by with the UMEP notes only (which the University provides).
4. Do ALL the problems in the book, including The Past Exams and Typical Exam problems.
To cut a long story short, the course is not starightforward, but if you do it seriously, it is rewarding. You can just about start calling yourself a mathematician