The course page will tell you the course structure and modules. I have an offer for English at York and considered applying to Warwick, but heard (on TSR) that Warwick is not really known for English (and York is). I know York's highest-ranking department field is for politics and such subjects (I forget the name for this field, but I mean as opposed to humanities, science, etc. not courses). The best way to find out how you can tailor your degree to your interests is to email the departments; York has been really friendly in my experience, can't speak for Warwick. If the campus factors into your decision, York has a pretty quiet and peaceful campus with lots of green space; the buildings are new but apparently nice inside. (I don't know if Warwick is a campus or city uni - York is campus - but the social lives of campus vs. city are supposed to be a bit different.) Sorry about the information dump. Best of luck!