Wessex Archaeology was commissioned by Blyth Offshore Demonstrator Limited to carry out an archaeological assessment of geophysical survey data as part of the pre-construction works being undertaken for Blyth Offshore Wind Farm. The data consisted of sidescan sonar, magnetometer and multibeam bathymetry data acquired in 2015 by EGS (International) Ltd. This review is of geophysical survey data over the Export Cable Area and the Array 2 Area only. The principal aim of this report was to assess the geophysical data for any anomalies of potential archaeological interest within the Survey Area. As this assessment follows on from two previous archaeological assessments a further aim was to integrate the results and produce an updated gazetteer of marine sites.