Yes, I did the same. Got a crap poorly paid job in an accountancy practice, just to get a foot in the door. Then studied in my own time, alongside a full time job, paying my own course fees, exam fees, etc and using my sparse annual holiday entitlement for the exam days and a few days of studying beforehand. I worked up from making the tea and doing the filing, and once I'd passed a handful of the 17 exams, I got a proper "training" job in a bigger firm of accountants, and then continued with the exams etc which took 5 years. So I know how hard it is.
My son chose a different profession (higher entry requirements). He spent 3 years at Uni getting his First in Maths, which is completely irrelevant to the job/profession he does, but was essential to get the job in the firm he's with. Now he's in the job, he had five years of doing the professional exams (13 in total) for his profession. So that's 8 years to get the professional qualification, the first three being more or last wasted, but essential to get the "foot in the door". Yes, some of the professional exams include bits he learned in his degree, but he could have learned them anyway had he not done the degree. So basically, the only benefit of the degree was to get through an arbitrary application process where someone had decided a Maths degree was the line in the sand to weed out the numbers.
As said above, my Godfather was in the same profession as my son, but he went it at the ground floor with just school leavers qualifications, no degree, and ended up on the Board of directors! Just shows how times have changed, and for no obvious benefit to the young worker!!