This vector contour dataset represents the distribution of the estimated, theoretical potential 'geothermal resources' (in GJ/m2 or PJ/km2) for the Permo-Triassic sedimentary aquifers in the Cheshire and Worcester basins, for resource temperatures greater than 40 °C. This dataset is the heat-in-place, and represents the amount of heat contained in the productive parts of the identified aquifers. The theoretical potential for the Permian aquifers in the Eastern England and Wessex basins was not calculated due to their insufficient reservoir porosity and transmissivity to be considered as a hot sedimentary aquifer resource. This dataset is derived from Rollin, K. E., G. A. Kirby, and W. J. Rowley. Atlas of geothermal resources in Europe: UK revision. British Geological Survey technical report WK/95/7, Regional Geophysics Group, 1995: https://webapps.bgs.ac.uk/data/publications/publication.html?id=21735106 and the European Geothermal Atlas (https://op.europa.eu/publication-detail/-/publication/9003d463-03ed-4b0e-87e8-61325a2d4456).