You must have an enthusiasm for both the arts and the sciences. The ability to draw and an interest in the history of art and architecture are essential, as is a knowledge of mathematics to at least a good GCSE standard.
It’s not possible to study Architecture as an affiliated course (ie in one year less than usual). However, if you’ve already completed an undergraduate degree at another university and now wish to study Architecture at Cambridge as a second undergraduate degree, you can apply to study the full three-year course. (In this case, you normally wouldn’t pay the separate College fee.) Please seek advice about your application as early as possible from one of the mature Colleges.