The PhD is a research degree which usually takes four years to complete. A student must write a thesis under the direction of a member of staff containing a significant amount of original Statistics. Potential students should look at the list of proposed research projects and the list of academic staff; the latter list includes links to pages that detail the areas of expertise of each staff member. Collaborations with outside parties have involved work in Chemistry, Medicine, Archaeology, Banking, Computer-Aided Design, and other areas.