One in every five pounds received by UK universities last year came from international students, according to Guardian analysis that reveals the scale of the sector’s growing dependence on overseas tuition fees for financial survival. With the annual dash to allocate university places for the next academic year about to begin, there are fears UK students could lose out to their overseas counterparts, whose higher fees have become critical to university budgets. Tuition fees from international students now make up a third or more of the total income at some…