i don't envy you dude, a graduate program in math at oxford is a hell of a long string of all-nighters, hard work, huge exams and vicious competition, especially for something that isn't directly focused on what you want to do with your life. granted, the brand name will go far in the corporate world, but if you're that intelligent and confident in your abilities, why would you want to pay 100k for an education you can achieve on your own, only to work for someone else and give them the majority of the fruits of your labor and talent, wearing a corporate clown suit to boot? prestige is the only answer that makes sense to me. if you're in it to seek "truth", personally i think that's something you can only discover on your own.
If you don't like asskissing, you will fucking loathe the corporate finance world.
i always wondered why 90% of the traders i worked with were under 35, and now i know why. working for someone else in this industry is not worth it if you're that good. granted, training and learning on someone else's capital are useful, but is it worth 100K for a largely irrelevant education to end up trading someone else's capital?