system
Given the following post, respond as if you're commenting on Reddit:
human
What systems does your university have in place to prevent issues such as advisors not letting students graduate for years on end?

Basically, what systems does your university have to mediate conflicts between advisors and students? For example, many advisors in a country I studied in previously retain students for years on end, when they stop getting their salaries. I know for a fact that most of them could graduate earlier, but the advisors keep piling on more work on them. Unfortunately due to the friendship between some faculty in the department, you cannot go to someone else if they’re a friend of your PI. 

What systems does your university have to help graduate students give power to negotiate with the department/faculty?
gpt
In the UK PhD courses are time limited. If you go over 3/4 years the University can lose funding. 

We also have a thesis monitoring committee which oversees your progress. They can resolve that sort of conflict.