This dataset provides habitat data from unstructured biological records made through iRecord. This dataset includes records between 1812 and 2024, however the majority of the data is from recent years. Records are from England, the Isle of Man, Northern Ireland, Scotland and Wales, and are at 1 km square resolution or more precise. The habitat data was entered by volunteers alongside traditional records of individual taxa, with the taxonomic data being the focus of the record. This dataset includes the year of the recording event (or a year range), the grid reference of the record, whether the taxa associated with the record have been verified as correct, and the European Nature Information System (EUNIS) habitat category recorded. Full details about this dataset can be found at https://doi.org/10.5285/464dee85-d724-45ed-b9dd-2e7a6f65c7dd