CSW is a catalog web service. Its main function is to provide discoverability of geographic data and link you to usable data either by download or by any other of the web services that are mentioned in this chapter.
This recipe uses the MetaSearch plugin. It requires the pycsw and owslib libraries installed in your system's Python. Refer to the Adding plugins with Python dependencies recipe of Chapter 11, Extending QGIS, for help on installing pycsw and owslib if you don't know how to do this.
Open the MetaSearch plugin by navigating to Web | MetaSearch | MetaSearch.
Pick a service from the dropdown on the right: UK Location Catalogue Publishing Service.
Type a search term in box on the left:
Park
.(Optional) Set an extent to...