A levels options, please help

I would say do Chemistry or Politics. Chemistry is quite a big step up, or so I've heard, but if you like it then it's up to you. Politics would be different, which would be refreshing as you mainly have science subjects, and you can see lots of links between Politics and Economics. I know people doing Chemistry, Maths and Further Maths and Physics, and they seem okay, but Chemistry does seem the hardest so far. Although I've heard a lot of chemists go into Investment Banking, so who knows.

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Yeah Chem is hard, I dropped it in favour of Further Maths. Further Maths and Maths is very useful as it gives you a good foundation for your university as well as Further is a preferred subject by most top universities. However, it is very time consuming, and will take up the bulk of your time. Your first four subjects are fine, if I were you I'd pick Gov and Politics due to it's informative nature. However, if you intend to take your fifth subject just up until AS Level, then go ahead with Chemistry.

all the best!

Hey, I'm in exactly the same position. I've decided to do Chemistry but drop it after a while if I find it's getting too much, and stick with the options I know I want to do for certain.