GCSE Subjects for Future CareersWatch this thread
Choosing relevant subjects applies to A-levels though. For example, for medicine, you have to take Chemistry, and then it is recommended to take biology, maths or physics for your other subjects.
To become a doctor GCSE wise UCAS says you need at least seven gcses with at least 5 subjects grade 7 to 9 and English and Maths at at least grade 6 or 5
2) Again, its not really specific gcses but more a levels that count. At a level, it is preferred that you take essay subjects like english, history, politics, languages or even law a level. So, it is probably best to take a language and history but specalise more at a level.
To conclude, nothing specific but it seems like triple science and EBacc subjects like History & a language are probably the best