The HTS system was introduced so that universities who benefit directly from migration do what they can to help prevent the education system being used by people who want to work illegally, rather than study.

BBC: Analysis: London Met's foreign students

"Consider the consequences of continuing to subject young people to an education system rooted in the Victorian era as a preparation for a post-school period of study and work in a digital age, " she said.

BBC: Costly hi-tech kit lies unused in schools, says study