Titchy - while it is true that pre 92 universities have taken out large loans and bonds, you cannot possibly be suggesting that these are the vulnerable institutions.
All of the HE sector is under stress (except perhaps Oxbridge) due to the perfect storm of Brexit, frozen tuition fees, demographic dip, increased pensions costs, costs of ever increasing regulation (TEF etc), costs of providing mental health support to students which should be provided by the NHS and so on. Many higher ranked universities are indeed looking for cost savings. But you don't get 40 year bonds without proving that your finances are very, very solid.
The vulnerable institutions for actually going bankrupt are small, post 92 institutions that many people on here wouldn't have heard of.