My daughter is a Uni Tutor, leading in Criminal Justice, she tells me that a number of her students every year are not Uk nationals

Now, if it's international criminal law, then I understand. But if they don't have UK citizenship, then why study criminal law, as the law is different in each country? Am I missing something?

I know, universities have to survive and everything is about the money, but still, why get a degree you will never be able to use?