A lot of grad schemes don't specify a particular course, just that you've obtained a minimum grade of (usually) a 2:1. There are obviously certain professions that require a particular individual (or one of a group of) degree discipline.
I'm just about to begin working as a trainee actuary after graduating with a maths degree, and actuarial is one career you could look into which is more numerate. There's also the obvious accountancy, investment banking, academia, data science, etc. areas in which you'd benefit from having a maths degree.
But really, if there's something you're interested in pursuing, it's just as much (if not, more so) about the experience you have than the degree you have when it comes to getting a job, so don't just limit yourself to something you feel you should go for just because you studied maths. If you have a passion for something, that pays dividends.