Craig Cox and Christopher Mullan made headlines when they were accused of racism at a recent NUS seminar.

The pair found themselves in the middle of an investigation, which was covered, widely in the national press after the training day, at the University of York.

More than 100 student union officers from around the UK, including members of Cardiff’s Student Union executive, attended the seminar.

The University of Nottingham, along with the NUS and North Yorkshire Police, are still investigating allegations that its newly elected education officer, Craig Cox, held up a poster saying ‘bring back slavery.’

Christopher Mullan, the Student Union president at Kings College, was alleged to have questioned moves which would encourage more students from the black community to attend university as he thought their presence would increase gun and knife crime.

Mullan has now been cleared and in an official statement, released after the end of the NUS investigation, Mullan said: “I would like to now make it clear what I was talking about. Since I am from London, and represent a London university, I could not have failed to notice the recent reported increase in knife attacks on young people over the summer.”

“I firmly believe I have a duty to do the best for all students, and that means asking questions relating to their safety, which is in truth all that I have done.”

Craig Cox denied any wrongdoing and accused the NUS of a witch hunt. He said: “The real story here is that the NUS wants to run a show trial that would make Stalin blush. Due process, natural justice and fairness are, in the NUS eyes, mere concepts that can be readily ignored when it suits them.”

Bellavia Ribeiro-Addy, the NUS Black Students’ Officer, said: “It is unacceptable that black students should have to put up with blatant racist stereotypes at NUS events. Slavery can not be treated as a joke. It is one of the greatest crimes in human history.”

The Nottingham University Students’ Union website claims Cox produced the sign to ‘wind up’ participants and claims to be currently considering what action to take.

Some students at the University are calling for his position of Education Officer to be revoked.

At the time gair rhydd went to print, Craig Cox’s comments were still under investigation.