I dont think you've made it clear how you much of an exception to the rule you are. I work in the financial services industry in the as an analyst and I have access to financial advisors and fund managers earnings information. Judging by what OP has been posting he is likely in the top 5% of earners, most people dont make as much as he does or even close to it so congrats to him for even pulling it off. I'm a Jersey native as well, not there at the moment but plan to go back at some point.
A question though, earlier in the week my manager was asking me what I plan to do with my life in regards to my career and I responded that I'd probably stay in the back office and try and work my way up the ladder and he made this face with me along with my coworker who was there. Then they started talking about how the real money is truly in the field being an advisor or a fund manager and whatnot. I really dont have the mindset for it though quite honestly, simply because I dont like the idea of directly being in control of peoples money and their futures. I've heard stories of advisors losing $300,000 of peoples money essentially screwing them, I dont want that on my head at night. I have a strong interest in the industry overall and being in the field seems to be the place where you do the most in it, so IDK
But my question is, is the back office really that much of a graveyard like they try to make it seem? Especially OPs no one ever has anything good to say about working in OPs, its either be in something regarding compliance or get out. After I finish out this month I'm eligible to take my series exams so I'd just like some advice from someone who's been there before, I'd rather not put so much into this to get so little out cause you really have to know way too many things to not be rewarded for it.