ICAO Annex 13:
3.1 The sole objective of the investigation of an accident or incident shall be the prevention of accidents and incidents.
It is not the purpose of this activity to apportion blame or liability.
I would suggest taking part in that particular Cranfield course before crucifying both a person and his relationship with the university. I did that module before this particular incident but it would not surprise me if the topic will be discussed during the upcoming version of the course.