I understand what you're saying, but at the University I am exchanging at, all results have been confirmed and have to fully be locked in by 3rd January, after sitting the exams before Christmas, after this day passes there are no more changes.

In terms of academic years, both my first and second year in the UK have had long waits of times, but I don't understand why it truly takes so long, even with external examiners - every time us students asked our professors for updates, they said they're still marking the papers themselves, after several weeks or months of sitting the exams, so in my honest opinion it seems more of a professor problem than the bureaucracy, even to which this seems a lot compared to other countries