Northern Archaeological Associates (NAA) was commissioned by Arcus Consultancy Services to undertake a geophysical (gradiometer) survey on land at Sweetbriar Farm, Ulceby, North Lincolnshire in advance of a solar farm development (NGR: TA 11284 17238). All survey work was completed to appropriate standards set out in current guidelines (CIfA 2014; Schmidt et al. 2015). The gradiometer survey used Bartington Grad601-2 dual magnetic gradiometer systems with data loggers. Readings were recorded at a resolution of 0.01nT and data was collected with a traverse interval of 1m and a sample interval of 0.25m. The survey data was collected with reference to a site survey grid comprised of individual 30m x 30m squares. The grid was established using Real Time Kinematic (RTK) differential GPS equipment, and was marked out using non-metallic survey markers. All grid nodes were set out with a positional accuracy of at least 0.1m and could be relocated on the ground by a third party. The base lines used to create the survey grids are shown on Figure 2 and further details are available in Appendix A. The processing was carried out using Geoplot 3.0 software and consisted of standard processing procedures. Details of processing steps applied to collected data are provided in Appendix B. On the greyscale plots, positive readings are shown as increasingly darker areas and negative readings are shown as increasingly lighter areas (Figs 3, 4, 6 and 8). Interpretation of identified anomalies is generally achieved through analysis of anomaly patterning and increases in magnetic response and is often aided by examining supporting information. The interpreted data uses colour coding to highlight specific readings in the survey area (Figs 5, 7 and 9). Appendix C details the terminology and characterisation of anomalies used for interpreting data. NAA undertook a geophysical survey over six fieldstotalling 43halocated to the north of the village of Ulceby in North Lincolnshire. The results of the survey largely relate to agricultural activity, modern features and geological or pedological changes in the substrata. It is possible that identified linear anomalies and trends may in part relate to infilled features, but their weak increases in magnetic value and fragmented patterning has resulted in a tentative interpretation. It is equally plausible that identified anomalies and trends are instead agricultural or geological in nature. The most convincing anomaly is in the centre of...