The Early Acheulian of north-western Europe

•Acheulian lithic assemblages.•North-west Europe (France and Great-Britain).•MIS 17 to MIS 11.•Dynamics of occupations, regional features.•Role of raw materials, activities, traditions over time. The introduction of biface technology in the Lower Palaeolithic arguably marked a fundamental change in how early hominins dealt with their world. It is suggested to reflect changes not just in tool form and innovative shaping, but also in planning depth, landscape use and social structures. This paper examines in detail the chronology of the first Acheulian industries in north-west Europe with the earliest sites from c. 700ka through to later sites at c. 400ka. It asks whether evidence from these sites can further our understanding of how the Acheulian and the bifacial technology emerged in this region, but more critically whether it was the underlying behavioural changes that enabled the more sustained occupation of northern latitudes. In particular the paper assesses whether cultural signatures can be identified and whether this reflects changes in group dynamics and social structures that could be a fundamental aspect of surviving in more seasonal, cooler climates. To achieve this, the industries are examined in their chronological and biogeographical framework and compared over time and with the south European sites. The study discusses the influencing factors on variability such as raw material, site function, palaeogeography and questions regarding the background conditions for the introduction of the bifacial technology in Europe. The flexibility in behaviour makes the identification of cultural traditions across Europe difficult due to the situational responses of the early hominins. The large geographical area, the long time period, the fragmented record and a chronology, that still needs improvement, all mean that only glimpses of traditions can be identified, usually at a very local level. However, due to the more extreme climatic cycles of northern Europe, compared to southern Europe, it seems inevitable that populations colonized repeatedly from south to north as climate warmed and retreated or populations became locally extinct as climate cooled. Although there are broad similarities in technology, attempts to identify cultural links have been hampered by the greater variety of raw materials in the south compared to the generally better quality siliceous raw materials in the north. Broad patterns over time might be discernible, with perhaps a refine