Robert Bertram Serjeant was born and raised in Edinburgh studying at Edinburgh University before completing his PhD at Trinity College, Cambridge, on Islamic textiles under the supervision of Professor C.A. Storey. He won a scholarship to work at SOAS with Professor A. S. Tritton. In 1940, while working in Aden, he was commissioned into the Aden Government Guards, spending his time in the Subayhi country of southern Arabia. He returned to the UK in 1941, where he edited the "Arabic Listener" at the BBC.
When the war ended, he restarted his academic career at SOAS, and in 1947 went to research the language and society of the Hadhramawt region in Arabia. In 1955, he became the chair of Modern Arabic at SOAS. In 1964, he returned to Cambridge where he was appointed Lecturer in Islamic History. He was also director of the Middle East Centre at Pembroke College, Cambridge, remaining in this post until his retirement in 1981. On retirement he returned to Scotland. His books and papers were donated to Edinburgh University by his widow.
Doreen Ingrams, the daughter of Edward Shortt MP, married Harold Ingrams (See RAS BMM/8) in 1930. She gave up a stage career to travel with him to Mauritius where he was a colonial administrator. In 1934, they moved to Saudi Arabia, travelling with him on his explorations and lived in Hadhramaut. During the war she helped with famine relief and medical care in the area, establishing the first bedouin girls' school. From 1955 she spent 12 years as a Senior Assistant in the Arabic Service of the BBC, and in 1972 she wrote "Palestine Papers 1917-1922: Seeds of Conflict".