This article examines the role of a range of large settlements in late Iron Age and early Roman southern Britain (c. 100 BC–AD 70) conventionally described as oppida. After reviewing current perspectives on the function and chronology of British oppida, new insights are provided through the statistical analysis of assemblages of brooches and imported ceramics at a broad sample of sites. Analysis of material culture reveals distinct similarities and differences between several groups of sites, often transcending regional traditions and supposed tribal boundaries. This patterning is primarily explained by the emergence of new forms of political organization prior to Roman annexation, particularly the creation of the Southern and Eastern Kingdoms.
