18.0.0

18.0.0 (2025-12-18)

Features

• api: Update LSOA and MSOA to 2021 Census data (fd4426a), closes #1181 #1053 #898
• models: Add lookup table models for new ONSPD fields (b89ec32)
• ONSPD: Add extraction scripts and lookup data for new fields (2cb312a)
• postcode: Add lsoa11 and msoa11 as explicit aliases (326ec47)
• postcode: Add schema, mappings and API response for new fields (afa64cb)
• postcode: Change lsoa/msoa to point to 2021 census data (cfa7cd0)
• setup: Add new ONSPD lookup tables to support tables array (36e9822)

BREAKING CHANGES

• api: lsoa and msoa fields now return 2021 Census values instead of 2011
• postcode: lsoa and msoa fields now return 2021 census data
  instead of 2011 census data.

• lsoa/msoa now return 2021 LSOA/MSOA names
• codes.lsoa/codes.msoa now return 2021 GSS codes
• lsoa11/msoa11 added as aliases for 2011 data
• codes.lsoa11/codes.msoa11 added for 2011 codes
• Updated OpenAPI spec and documentation