Archaeological excavations in advance of the construction of the new A43 dual carriageway between Towcester and the M40 (Northamptonshire and Oxfordshire) were undertaken by Northamptonshire Archaeology in 2000 and 2001. The excavations formed part of a staged series of investigations aimed at mitigating the impact of the road upon archaeological sites along this route. The evidence is discussed and set in its regional context. A comparison of the artefactual and economic evidence from the Iron Age sites suggests that there were slight differences in the assemblages which could indicate different economic practices and perhaps social roles.