London Invasive Species

There are many species present in London, most of the non-native species do not pose a threat to biodiversity and add to the individuality and richness of London’s wildlife and heritage. However, there are some invasive non-native species which are a cause for concern, some of which are threatening the value of London’s natural environment. Uniquely, the highly urbanised nature of London and the anticipated impacts of climate change are likely to exacerbate the effects of invasive non-native species.

Records of species that are known to be invasive non-natives, as defined by the London Invasive Species Initiative (LISI), are highlighted as such within our database.

For more information, see the list of specis of concern on the LISI website. For more detailed guidance about status descriptions and what they mean see our data guide in the policies section.

Information is based on the following statuses:

  • Schedule 9 of the Wildlife and Countryside Act 1981
  • The UK Water Framework Directive Technical Advisory Group’s invasive species list
  • LISI expert knowledge