In 1922 he was appointed Professor of Mathematics at King's College London, becoming professor of Pure Mathematics at University College in 1924. Titchmarsh was already an assistant at University College and he became Jeffrey's assistant on his appointment to the chair.
Sa 1922 siya ay hihirangin Propesor ng Matematika sa King's College London, maging ng mga propesor Ganoon Mathematics sa University College sa 1924. Titchmarsh ay isang assistant sa University College at siya ay naging Jeffrey's assistant sa kanyang appointment sa upuan.