Data associated to: "Mineral and biological ice-nucleating particles above the South East of the British Isles" Sanchez-Marroquin et al., 2021. For further information, please contact a.sanchezmarroquin@leeds.ac.uk. The data corresponding to each figure is displayed as a single .csv file. However, the PCASP-CDP as well as SEM-EDS data for each sample, which appear in Figures 3-6, have been separated into a single folder. In this folder, you can find four different .csv files for each of the samples, containing the PCASP, CDP, SEM size distribution and compositional data.