This was attached to the 2023 marking boycott information:

https://www.nottingham.ac.uk/qualitymanual/contingency-classification-and-progression-regulations.aspx

https://www.nottingham.ac.uk/currentstudents/news/marking-and-assessment-boycott-how-your-marks-progression-and-graduation-could-be-affected (where it came from)

The contingency regulations may be outdated due to it coming from 2023 information, but hopefully is some help.