Sir Hugh Selby Norman-Walker was a British colonial official. He served in India from 1938 to 1948. Joining the Colonial Office in 1949, he successively served as an Administrative Officer and an Assistant Secretary in Nyasaland, and was seconded to the Cabinet Office of the Federation of Rhodesia and Nyasaland in 1953. He returned to Nyasaland to become Development Secretary in 1954, Deputy Financial Secretary in 1960 and Secretary to the Treasury in 1961. He remained in the government until 1965 when Nyasaland gained independence as Malawi in 1964. In 1965, Sir Hugh was posted to the Bechuanaland Protectorate as Her Majesty's Commissioner. Knighted in 1966, in September of the same year he witnessed the independence of the Protectorate as Botswana. In the next year, Norman-Walker was posted to the Seychelles as the Governor and Commander-in-Chief but his short tenure came to an end when he was assigned to succeed Sir Michael Gass, who was in turn appointed High Commissioner for the Western Pacific, as Colonial Secretary of Hong Kong in 1969. He was once rumoured to be the designated candidate to succeed Sir David Trench as the Governor of Hong Kong, but the rumour soon died out when the post was taken up by Sir Murray MacLehose, a career diplomat, in 1971.

The Chief Secretary for Administration, commonly known as the Chief Secretary of Hong Kong, is the most senior principal official of the Government of the Hong Kong Special Administrative Region. The Chief Secretary is head of the Government Secretariat which oversees the administration of the Region to which all other ministers belong, and is accountable for his or her policies and actions to the Chief Executive and to the Legislative Council. Under Article 53 of the Basic Law, the position is known as "Administrative Secretary". As the second highest ranking public official in Hong Kong, the Chief Secretary acts as Acting Chief Executive when the Chief Executive is absent.