The Inter-Library Loans service allows City St George's staff and students to request items that aren’t available in the library’s collection
Clerkenwell and Moorgate
You can order an Inter-Library Loan online, via the Library Services website, each request will cost you at least £3.00. 
Tooting
You can order an Inter-Library Loan online, via the Library Hunter Search, each request will cost you £6.00 (most NHS staff can request 10 interlibrary loans per year without charge. After this, further items can be requested at a cost of £6 each).