I've just finished this exact degree. Let me put a placeholder here though — bit busy at the moment, but I'll come back and edit this post later.
I guess the real answer is that the per-semester point allocation is just a formality. Most of my classmates put time towards the project as needed depending on whether they thought they were behind or not.
Some basic information (please see the
handbook or the
the MSc guide on the School website for more complete information):
- The only "assessment" due in Part 1 is a literature review. This is a short (2-page, I think) document giving a review of the existing literature (that is, research papers) relevant to your research project.
- In Part 2, a short intermediate research report is due; short meaning something like 2 pages.
- Part 3 is when the main thesis is due. You also have to give a 23–25-minute presentation at the end of this semester.
Officially, the research is meant to be conducted in "60 of the next 66 weeks" starting from the January/July closest to your Part 1 commencement. However, I'm not sure that anyone strictly followed this. There was also an "indicative total time commitment of 800 hours", and I'm pretty sure most of my classmates estimated that they didn't even reach half of that by the time they finished.
The common pattern is that most people do little during Part 1 (less than what 12.5 points are worth) and put in colossal amounts of work during Part 3 (more than what 25 points are worth). My own situation was even more extreme than this: I did very little in Part 1 (started in July 2017), did not look at research during the 2017/2018 summer, did little in Part 2 (okay, this was not laziness; I had really tough coursework that semester), and let Part 3 dominate my workload for the last semester (as well as the winter break before it).
My impression is most people usually worked on research during their (two) semester breaks after Part 1 — some during the first break (after Part 1) and lots during the second break (after Part 2).
I'm not so sure I answered everything, so feel free to ask anything else.