Frankly, being at such an early stage (i.e. pre-A-level), plus the fact you hate science, it's really quite honestly one of the stupidest options possible.
If you hate science, you would hate medicine, full stop - and a lot of medicine is about passion - you're going to hate your job for life, even if you finished medical school.
Stick with something you love, and something you want to do.
In all honesty, i truly believe that if you're happy doing what you're doing, then who cares about employability, or salaries, or job security.
If i loved emptying bins, i would be a binman, and i wouldn't let anyone put me down for it.
I love science, i love people, therefore medicine.
You love maths and economics - there are loads of mathematically based economics and finance based degrees which you would enjoy much more, and frankly just having a degree is going to increase your employability anyway.
Good luck