How Boundary Line, ONS Boundaries and NSPL and ONSPD are processed

This document 'How BoundaryLine, ONS Boundaries and the NSPL and ONSPD are processed' shows, in a flow diagram, the interaction between OS Boundary Line releases and updates to ONS boundary and postcode products. (File Size - 182 KB)

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Source	https://open-geography-portalx-ons.hub.arcgis.com/documents/ons::how-boundary-line-ons-boundaries-and-nspl-and-onspd-are-processed-1
Last Updated	December 2, 2025, 14:19 (UTC)
Created	September 20, 2023, 22:08 (UTC)