Widespread neutrophilous to calciphilous, species-rich thorny scrub and seminatural hedge communities of the British Isles, with Crataegus monogyna, Hedera helix, Rubus spp., Prunus spinosa, Fraxinus excelsior. Included are the Hedera helix-Urtica dioica, Mercurialis perennis and Brachypodium sylvaticum sub-communities of the Crataegus monogyna-Hedera helix scrub.