This paper presents the results of an audit of non-native species in England, including all taxa that are found in the wild. It excludes garden plants, animals that breed only in greenhouses, pests of stored crops, human parasites, and pests of human habitation unless they also escape into the wider environment.

 

Data were collated by specialists from the Centre for Ecology and Hydrology (CEH), the Central Science Laboratory (CSL), the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) and the Botanical Society of the British Isles (BSBI). The main product is a tabulation listing 2721 species and hybrids, each represented by a row with 48 columns giving names and attributes. Results from this tabulation are reported here, generally concentrating on 1413 species and hybrids selected to be of most significance (the ‘shorter list’). Most of the omitted species and hybrids are for rare vascular plants that are either casual or not properly naturalized, or are scarce non-clonal hybrids with little environmental significance.