...or, the annual tuition fees of 27 students, at £9,000 each per year...
Roughly 16,000 students at QMUL. which works out at about £144m / year income.
2015 financial statements record their total income as £378m:
£71m Funding Body Grants
£164m Tuition Fees and Education Contracts
£93m Research grants and contracts
£48m Other income
£623,000 Endowment and investment income
So very roughly it looks like maybe about 60% of their income comes from grants and contracts (which will probably mostly be public money, but a fair proportion will be private money) and the rest from tuition fees (i.e. paid for by the students). That rough breakdown is fairly typical of higher education institutions I think. QMUL isn't particularly large though, the university I work for, University of Nottingham, had 43,765 students in 2013, and
total income of £593m.