The immediate problem is uncertainty. No one knows what effect leaving the EU will have. Britain is the second most popular destination for overseas students: each year more than 70,000 students come from other EU countries, a bit more than 5% of the total undergraduates. Now, they pay the same fees as UK students; after Brexit they will have to pay double, the full international student rate, and they will not be eligible for loans.
Continue reading at: https://www.theguardian.com/commentisfree/2016/sep/22/the-guardian-view-on-universities-facing-a-double-whammy