This work investigates the transition of Britain from a Roman province to the early Anglo-Saxon settlements. R. G. Collingwood, a distinguished philosopher and historian, utilizes his expertise in Roman archaeology to analyze the cultural and political shifts occurring between the departure of Roman administration and the establishment of Germanic tribal structures. He presents a framework that emphasizes the continuity of social institutions despite the collapse of imperial governance.

Historians and archaeologists frequently cite this text as a foundational, if dated, study of the period. Readers often note the academic density of the prose and the author's rigorous commitment to interpreting physical evidence alongside classical texts.