[3] Darlington's key works include editions of medieval documents: William of Malmesbury's Vita Wulfstani (Camden Series, 1928), The Cartulary of Darley Abbey (1945), The Glapwell Charters (1957–59), (with P. M. Barnes and F. C. Slade) The Winchcombe Annals 1049–1181 (1962), and The Cartulary of Worcester Cathedral Priory (1968).
His notes for an edition of the so-called chronicle of Florence of Worcester (now attributed to a monk called John) were destroyed in a bombing raid in 1942; although he was able to do much work on the project afterwards, he did not complete it before his death.
His work was continued by Patrick McGurk and a full edition of The Chronicle of John of Worcester appeared in three volumes in the Oxford Medieval Texts series in 1995.
Darlington also wrote articles and chapters, but no monograph, though his inaugural lecture at Birkbeck was published as Anglo-Norman Historians (1947).
[5] He delivered the Creighton Lecture at the University of London in 1962,[1] served as vice-president of the Pipe Roll Society from 1969 to 1976,[6] and was elected a fellow of Birkbeck College in 1970.