MELODIES WP3 non-final land cover dataset as CovJSON in both lat/lon and British National Grid.
Latitude/Longitude: https://ec-melodies.github.io/wp03-landcover-covjson/CRS84/land_cover.covjson
British National Grid: https://ec-melodies.github.io/wp03-landcover-covjson/BNG/land_cover.covjson