Hi, for a brief period of time last year, I too was interested in becoming a pilot. Don't take my word for it, but from the research that I did back then, I don't think you actually need a degree to become a pilot. Although there are some degrees out there that may help and give you knowledge on aviation, they won't guarantee you a job as a pilot because a degree is not required. The most important thing (which I read) is getting plenty of flight training, and they are very particular about the number of hours you need to have spent flying prior to getting your pilot's license. To get your pilots license, you need to have spent a specific number of hours flying, passed a number of written exams based on flying, and also passed a medical aptitude test thingy (I can't remember the correct name of it, but it tests your mental and physical health and most importantly, your eyesight). Therefore, no A-level physics or maths is involved in this process. Getting flight training is very expensive though, which is what put me off wanting to be a pilot.
I'm not trying to put you off, but basically, it doesn't matter if you are not doing A-level maths or physics.
If I were you, I would look up any local aviation places that offer flight training and may be able to help you get your pilot's license. If you cannot currently afford the costs of flight training, then you could perhaps do a degree in one of the aviation related courses that you mentioned and whatever job that leads you to, you could use the money you earn from that job to pay for flight training. Becoming a pilot will be a long and hard process, but i'm sure you can do it!