GCSE Maths Exam Board for an Irish student?

Hi guys,
At the end of May, I would have finished my Junior Certificate in Ireland and I am willing to spend the majority of next year focussing on GCSE Maths as I will be applying to a large number of UK universities.

I would really appreciate it if you guys could point out the most common exam board and the textbooks you use in school in preparation for the GCSE Maths finals. Please note that I'm interested in Higher textbooks, not Foundation level.

I am looking into the OCR board primarily because its published by three very influential universities in the UK but if there's a common exam board that everyone's using and preparing towards I'd be willing to look into that as well.

Cheers

A textbook published by Cambridge University Press isn't a reason to choose an exam board in my opinion.