He returned to Cambridge after the war and graduated in 1921 but, perhaps because of his interrupted studies, he only obtained a Second Class degree in Natural Sciences. However he went on to obtain a doctorate in 1926 and, after being a Fellow of St John's College (1924-27) and Christ's College (1928-29), he was appointed professor of applied mathematics at the University of Manchester.
Siya bumalik sa Cambridge pagkatapos ng digmaan at nagtapos sa 1921 ngunit, marahil dahil sa kanyang pag-aaral interrupted, siya lamang ang nakuha ng Ikalawang Class degree sa Natural Sciences. Gayunman siya nagpunta sa makakuha ng titulo ng doktor sa 1926 at, matapos ang pagiging isang Fellow ng St John's College (1924-27) at ni Kristo's College (1928-29), siya ay hihirangin ng mga propesor inilapat sa matematika sa Unibersidad ng Manchester.