Having joined the Foreign Service in 1891 as a temporary library clerk, Severn was appointed, in 1894, private secretary to Sir
Charles B H Mitchell, then Governor of the Straits Settlements. After a period of 17 years in the colonial administration of the Federated Malay States including four years as private secretary to Governor Sir
John Anderson, he was appointed Colonial Secretary in Hong Kong, leading the administration under
Governor Sir Frederick Lugard. He was acting governor of Hong Kong for just over a year during a transition between governors from 1918 to 1919. In 1920, at 50, he married Margaret Annie Bullock, the daughter of
Thomas Lowndes Bullock who from 1899 was Professor of Chinese at the
University of Oxford, and they had two sons and a daughter. Both Severn and Governor Sir
Reginald Stubbs retired in 1925, victims of the
general strike which all but destroyed Hong Kong that year and for which they were criticised by James Jamieson, British Consul General in Canton. ==Later life==