An example of Gothic Revival architecture, the original school building on the present site, built between 1866 and 1867, was designed by Thomas Simpson. It consists of a tower and three wings: West Wing, Middle Corridor and East Wing. West Wing houses classrooms for mathematics, English and geography. Housed in Middle Corridor are the learning support department, two ICT centres, two language laboratories, religious studies classrooms, two multi-purpose lecture theatres, the library and staff offices. East Wing contains the old gymnasium, the Player assembly hall and classrooms for modern languages, history and classics. The school front and other features are Grade II listed.