The new GiGL habitat database translates and stores the legacy of information from London’s rolling borough-by-borough habitat survey (1984-2008), subsequent local surveys since, and Ordnance Survey’s (OS) land use data. All of this information is aggregated into the Integrated Habitat System (IHS) within an OS MasterMap-based framework, and includes additional information about topology and classification. What makes this hierarchical system special is that it allows us to incorporate data from all standard survey methods. This enables GiGL to export habitat information as simple IHS codes, broad habitat types, or priority habitats for your area of interest. We can also translate the data back into other metrics useful for different users and audiences. For example, the data can easily be translated to UK Habitat Classifications, making it particularly useful for work relating to Biodiversity Net Gain.