 He went on to become a Fellow of the college, a Tutor, Senior Tutor, Bursar, and finally, from 1919 to 1946, Provost.He was the University's Senior Proctor for 1917–1918 and Vice-Chancellor, 1932–1935.In 1942, Lys purchased Brockleaze (otherwise known as Brockless Cottage) in Pullens Lane, Headington, a suburb to the east of Oxford, and renamed it "Pullen's Gate".