Description: The toilets on the top floor are a good spot to cruise, decent room.
Bathrooms in the undercroft are accessible without being a student. Come up the main steps outside the library, and take the stairs going down on the right. Follow the path until you see signs for toilets and go in there. A big disabled bathroom that you can lock and decent-sized stalls. There will usually be someone jerking off in the bathroom anyway - hundreds of young guys go to uni at least one of them is jacking it at any given point