what GCSE subjects do i need to choose to be an accountant and what level?
As they've said, it doesn't really matter. I knew I was going to be doing science and maths A-Levels so I chose a couple of subjects for my GCSEs that would get me doing different things to just sitting and learning in a classroom so I did food tech and PE. It was a nice contrast to some of my other lessons.
At GCSE level, the most important thing would probably be to focus on working hard in maths and getting a high grade. Having said that, if your school offers economics or something similar it would be useful to take to see whether you would want a career related to it