Stuart Lawson and Ben Meghreblian have created a resource of subscription expenditure by UK higher education institutions:
Lawson S and Meghreblian B. Journal subscription expenditure of UK higher education institutions F1000Research 2015, 3:274 doi: 10.12688/f1000research.5706.3
This shiny app displays the data in an interactive way and can be seen at http://shiny.retr0.me/journal_costs/
More details in the blog post here