Sites of Special Scientific Interest Units (England)

Site Units are divisions of SSSIs. based on habitat, tenure and management, and are the basis for recording all information on SSSI Condition and management. They range in Area from 0.004ha up to 18,000ha and only overlap where SSSIs overlap. Boundaries are generally mapped against Ordnance Survey MasterMap. Attribution statement: © Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right [year].

Data and Resources

Data_Gov_UK_Metadata_Sites_of_Special_Scientific_Interest_Units_England.url

Data_Gov_UK_Metadata_Sites_of_Special_Scientific_Interest_Units_England.url...
Open_Government_Licence.url

Open_Government_Licence.url download on Defra Data Services Platform
Sites_of_Special_Scientific_Interest_Units.lyr

Sites_of_Special_Scientific_Interest_Units.lyr download on Defra Data...
Natural England Open Data Geoportal Page

Natural England Open Data Geoportal Page
SitesOfSpecialScientificInterestUnitsEngland_Download

Download data by area of interest
SitesOfSpecialScientificInterestUnitsEngland_WFS

Sites of Special Scientific Interest Units (England) WFS
SitesOfSpecialScientificInterestUnitsEngland_WMS

Sites of Special Scientific Interest Units (England) WMS
Sites_of_Special_Scientific_Interest_Units_(England)_ESRI_REST_Feature_Server_Endpoint

Sites of Special Scientific Interest Units (England) ESRI REST Feature Server...
OGC API - Features service

OGC API - Features service

Additional Info

Field	Value
Last Updated	August 5, 2025, 18:42 (UTC)
Created	December 20, 2016, 10:29 (UTC)