Should add that all buses to the campus, be they the TravelCoventry buses from Coventry / Leamington or the Stagecoach ones from Leamington, pass through a set route once actually on campus, ie there are 3 stops within the campus which will be used no matter which bus to the university you take. The stop closest to the humanities building, as well as the library, is the second of the three (the building is directly opposite the stop).