A geophysical survey was carried out within a 4.5ha area of land at Kintbury Park Farm in West Berkshire, ahead of construction of a new gallop track. The north eastern part of the site contains the remains of a Roman bath house, excavated in 1950-51. The results of the detailed magnetometry revealed anomalies that are likely to be associated with the bath house, although it is not clear if this is to distinctly definable features or to the backfilled material or a combination of the two. To the south of this are similar anomalies that could indicate a further small structure. These anomaly groups appear within a rectilinear enclosure, the western side of which continues to the south beyond the limit of the survey. Further west is a fragmented linear ditch of archaeological potential with a series of pit-like anomalies of uncertain origin within a north south linear zone. Other anomalies are generally weak and lack a coherent morphology preventing confident interpretation.