Financial Mathematics or Computer Science?

Please help I honestly can't decide, I got a B in alevel mathematics (very close to an A) and I'm stuck between studying maths with finance or computer science at Kent. I would enjoy both subjects equally but I honestly can't decide which would be a better choice, I'm worried that if I choose Financial maths I won't be able to get into a tech job when I'm older but at the same time I do enjoy mathematics enough that I'd miss it if the computer science doesn't contain enough Mathematics... Seeing as I got a B in maths, would it be a bad choice to go for anything maths related anyway?