The building comprises five laboratories - physics, chemistry, biology and two general science labs - together with a tutorial room and an office for the head of science.The physics lab has an associated dark room; the biology lab has a greenhouse and a demonstration/display area for longer-term experiments. There is also an external artificial pond and waterfall for the biologists.

Its layout represents some major innovations in the way science was taught at St. Mary's, arising from detailed design development with the teaching staff. Complete experimental apparatus for a whole form can be prepared in the large shared (and interlinked) prep rooms and wheeled into the labs on trollies. Fixed benches are largely replaced by mobile tables, purpose-designed to fit in a number of ways around fixed service pods, and sized to allow safe separation between practical work and note-taking.