After the war, he took part in an Oxford University Expedition to Spitsbergen in 1921 and was chief medical officer and naturalist on the 1922 British Mount Everest expedition. He returned to Spitsbergen in 1923 and to the Garhwal Himalaya in 1927. He led the Oxford University Expedition to Greenland in 1928 and the same year was awarded the Founder's Medal of the Royal Geographical Society for his work in the Himalaya, especially his discovery of the Siachen Glacier. In Greenland again, 1931 and 1934, and Baffin Island, 1934.