I read the comments posted above from students on Reddit, and was shocked. Arday seemed to have not the slightest idea of how to lecture, teach or mentor, and didn't even attempt to stick to the timetable, cancelling lectures , not reviewing work and finishing early. This should have been investigated early on.
I noticed one comment was about his time at Roehampton, presumably in the Education department. I went to one of the four colleges which combined to form the Roehampton Institute, now University, and used to mentor students from there on teaching practice. None of Arday's poor practice would have been tolerated then, and I noticed the tutor who received a complaint said, don't make a fuss, he is leaving shortly. Fear of accusations of racism?
Those students were paying for this, and in the case of the MA students at Cambridge, they only had the one chance to literally make the grade, and he failed them.