From 1939 he occupied the chair of mathematics at Durham, a position he was to hold for 20 years. He served the university in many major administrative capacities, on Court, Senate and almost all major committees.
Mula 1939 siya ay abala sa silya ng matematika at Durham, isang posisyon na siya sa hold para sa 20 taon. He served ang unibersidad sa maraming pangunahing administrative capacities, sa Court, Senado at halos lahat ng mga malalaking komite.