Dr Black, an ethicist and theologist, argued that allowing the college's 400 students to access porn on its network would be condoning the objectification of women.

"Pornographic material overwhelmingly presents women in ways that are profoundly incompatible with our understanding of what it is to treat people with respect and dignity," he said.

He maintained that even same-sex pornography was treating another person as a "means to an end", and that porn was addictive.

"The way that it functions is that it desensitises viewers so that they need to consume more of it or more extreme versions to achieve the same level of arousal."