Avery contributed to English language work on Persian history and literature, such as The Age of Expansion and Medieval Persia and published Modern Iran. One of Avery's best known works is a translation (with poet John Heath-Stubbs) of the Persian text of Rubaiyat of Omar Khayyam, first published in 1979. His final work was The Collected Lyrics of Hafiz of Shiraz, published in 2007. His translations are published with copious notes explaining allusions in the text and filling in what the poets would have expected their readers to know.
Avery was born in Derby and educated at Rock Ferry High School, Birkenhead and Liverpool University. War Service in the Royal Navy interrupted his studies, which he resumed after the war at the London School of Oriental and African Studies, graduating in 1949. He learned Arabic and Persian and knowledge of these led to his appointment as chief language training officer with the Anglo-Iranian Oil Company in Abadan, South-West Iran. In 1951 the government of Iran nationalised the oil industry and Avery moved to Baghdad, where he taught English. In 1952, he published, with John Heath-Stubbs his first translations of Hafiz. In 1958 he was appointed Lecturer in Persian Language Literature and History at Cambridge University, becoming a Fellow of King's College in 1964. He retired from the Lectureship in 1990, but continued researching and writing as a Fellow of King's, and continued to lead an informal reading group in Persian poetry, despite ill health, until his last months.
Peter Avery, The Speech of the Birds, Mantiqu't-Tair, of Faridu'd-Din 'Attar / Farid ad-Din Attar, 560 p. (The Islamic Texts Society, Cambridge, UK, 1998). ISBN 0-946621-69-1 (cloth), 0-946621-70-5 (paper).