First of all, you'd probably need to finish your A-Levels before you think of applying to most of these universities. It depends on which university you're applying, but most universities demand a minimum of two full A-Levels and two AS-Levels, or in general three A-Levels.
Also, you
cannot get into MSc without a Bachelors degree. I guess there might be diploma programs which would qualify you for Masters, but I am almost definitely certain that there's a small chance of that, too. You will absolutely need a Bachelors degree i.e. BSc degree before going into MSc. It is possible that some Canadian or American universities will give you extra credit for your A-Levels and you might finish your Bachelors program in less than the usual four years (where it is almost always three years in UK, though some Undergraduate/Bachelors' courses are longer).
Bottom-line: unless you're the son or daughter of a corrupted politician you can never get in a Masters/Graduate program without a Bachelors degree.
If you have any more queries, feel free to ask.
Best wishes!
