Quote ="FC Wembley 08"Who covers the interest on the loans?
Who foots the bill for the unpaid loans?'"
The Student, when he/she repays their loan. According to Hutchies link the average starting salary for a graduate is 25k - 29k so most students start repayments on their first job.
The banks probably, they issue the loan the same as they would to you or I.
Persons with degrees statistically earn more and contribute more to the economy and taxes through earning and spending.