This dataset (published in EPSG:4326 - WGS84) provides polygon data for Local Authority Green Belt boundaries. Local authorities digitise areas of land designated as Green Belt and send the Green Belt boundaries to MHCLG. The Local Authority Green Belt boundaries are merged and quality assured by MHCLG and are mapped against OS and ONS Local Authority District (Mean High Water mark) boundaries for the corresponding period. This improves the data quality, removing overlaps between Local Authority Green Belt boundaries and provides consistent approach to area calculations and in the delimiting of land designated as Green Belt where it meets coastal or estuarine areas. Local Authority Green Belt boundaries for 2018-19, 2017-18, 2016-17, 2015-16, 2014-15, and 2013-14 have been revised inline with the methodology mentioned above. This ensures a consistent time series is established to better track changes to the Green Belt over time. This data is released under Ordnance Survey Open data licence: http://www.ordnancesurvey.co.uk/business-and-government/licensing/using-creating-data-with-os-products/os-opendata.html