Wessex Archaeology was commissioned by Marine Ecological Surveys Limited on behalf of CEMEX UK Marine Ltd and Lafarge Tarmac Marine Ltd to undertake an archaeological assessment of geophysical survey data as part of the heritage impact monitoring process implemented for aggregate extraction Area 430. The overall aim of this report is to provide an archaeological review of the effects of dredging on known archaeological sites and previously identified geophysical anomalies that may be of potential archaeological interest; and to assess the areas for new sites of potential archaeological interest. The assessment consisted of an archaeological interpretation of 23 geophysical anomalies identified by Marine Ecological Surveys Limited in sidescan sonar and multibeam bathymetry data acquired by GEOxyz in 2014. In addition to this, the results of the previous monitoring report undertaken by Wessex Archaeology in 2011 were assessed, and the 2006 desk-based assessment and 2007 reports on aircraft debris previously found from within Area 430 during dredging were also considered Thirteen geophysical anomalies identified by Marine Ecological Surveys Limited were interpreted as being natural in origin. Ten anomalies from the 2014 geophysical survey and three from the previous assessment have been identified as being of possible archaeological potential within the Study Area. Of these, six are located within the area expected to be impacted by dredging. These were all classified as anomalies of uncertain origin of possible archaeological interest and were not deemed to require exclusion zones.