It clearly works differently in scotland, but I am now in my first year of Aeronautical Engineering at an english university having gone through the english further education system.
Aero is all maths. Maths maths maths maths maths. Every module, excluding something like aircraft sytems (if you do that) will just basically be maths.
Now in my case I have a load of modules (Fluid Mechanics, Thermodynamics, Mechanics, Mechanics of Materials and so on) which require proficiency in algebra/calculus/vectors/matrices mostly. Then I have pure maths modules, which are around the further maths level for first year.
Im hoping you have a good enough understanding of the english system considering the amount of chat that goes on here about it.
You are obviously a bright person, and I do not think that you wont be able to cope with the material. That said, the fact you have not done any for a year might make it more of struggle for the first month or two (but in my opinion i'd forgotten all my A levels over summer before going to uni despite having no gap year).
I would say do not worry, and that you should be able to cope with the material - however Aeronautical is no easy degree. The material can be hard and there is lots of it, so if you are having a hard time well its par for the course.
Oh sorry forgot to say, physics. It's not taught seperately, its basically assumed knowledge but you wont need any of that nuclear physics (shame as its the best bit) or that stuff.
If its anything like my course the main things are electrical circuits, gas laws, particles and that jazz. Obviously the laws of motion are used heavily as you might expect.