I qualified as a CA with EY in London around 15 years ago in banking audit. Left soon after qualifying. Some weeks I clocked in over 50 hours but never usually much more. Never had to do an all-nighter though I knew loads of people who did. Part of the reason I had a good experience was that I was lucky enough to work with an excellent manager who was well organised and knew how to audit without wasting time on spurious nonsense. I had to sacrifice a few Easter bank holidays in busy season but we got back the time in lieu. Outside of busy season was fairly quiet - Thursday afternoon pub lunches etc.

Some people did far more hours than me but I think it was mostly self imposed. A small minority of the partners were twats but the vast majority were mindful of people’s well-being. Friday evening drinks in corney and barrow were sacred and on days I didnt want to work longer I just got up and left to the disbelief of the audit room - they got over it though!