This 1 km summary pixel dataset represents the land surface of Great Britain and Northern Ireland, classified using two classification schemas, target and aggregate classes. The target class schema comprise 21 UKCEH land cover classes based upon Biodiversity Action Plan broad habitats. The aggregate class schema comprises 10 aggregate classes that are groupings of the 21 target classes. The aggregate classes group some of the more specialised target classes into more general classes. For example, the five coastal classes in the target class are grouped into a single aggregate class. The 1 km percentage product provides the percentage cover for each of the 21 land cover classes for 1 km x 1 km pixels. This product contains one band per habitat class, producing 21 and 10 band images for the target and aggregate class products respectively. The 1 km dominant coverage product is based on the 1 km percentage product, and reports the land cover class with the highest percentage cover for each 1 km pixel. A full description of this and all UKCEH LCM2025 products are available from the LCM2025 product documentation. Full details about this dataset can be found at https://doi.org/10.5285/c71ad6f1-200c-4fdf-b946-a2e3923794ee