Cool that there is actually a page for a change: www.ox.ac.uk/students/academic/exams/timetables e.g. working in 2024: web.archive.org/web/20240305013807/https://www.ox.ac.uk/students/academic/exams/timetables
And translating from their arcane vocabulary:
- Prelims: first year undergrad
- Honour school; other years of undergrad, sometimes it includes masters others not which is confusing
- MPhil, MSc, MSt: masters