Headland Archaeology (UK) Ltd undertook a geophysical (magnetometer) survey at a 123-hectare site north-west of Elstree, Hertfordshire to inform a planning application for a proposed solar farm. Several fields were surveyed across the full extent of the site. In all locations the data was extremely disturbed due to the presence of 'green waste' in the plough soil. No anomalies of archaeological potential were identified. The extent and magnitude of the disturbance was such that no archaeological anomalies, if present, could be identified against the perturbed magnetic background. Consequently, following consultation and review it was agreed that continuing the survey would not help inform the application and was so abandoned.