This geodata pack provides the CDRC convenience retail catchments for the year 2017 for the retail centres in Great Britain. The data represent the maximum likely catchment area for the 2017 retail centres based on their size. They were created by calculating the shortest road network distance between a convenience retail unit and the centroids of the Output Areas in Great Britain. The data are provided in geopackage format that is supported by open source software such as QGIS and R. [N.B. For this archive, the file has been converted to a zipped shapefile and very slightly simplified using Mapshaper, due to storage constraints.]