Though his contributions ranged over a number of subjects, Brown developed a particular interest in the theatre. He became a drama critic for the Saturday Review in 1923 and was named the Shute lecturer in the art of the theatre at Liverpool University three years later.
Brown's work spanned various disciplines, but he became particularly passionate about theatre. He started writing reviews of theatrical performances for the Saturday Review in 1923 and was later appointed to teach theatre at Liverpool University.