THIS FILE IS NOT THE FINAL FILE AND ORDNANCE SURVEY MIGHT MAKE UPDATES TO IT BEFORE WE RELEASE THE FINAL FILEThis file is a 'best fit' lookup of 2021 Output Areas to Westminster Parliamentary Constituencies (July 2024) to Local Authority Districts in England and Wales - (File Size - 11 MB)These Westminster Parliamentary Constituencies will become operative at the next General Election on the 4th July 2024.Field Names - OA21CD, PCON25CD, PCON25NM, PCON25NMW,  LAD21CD, LAD21NMField Types - Text, Text, Text, Text, Text, TextField Lengths - 9, 9, 40, 32, 9, 35 For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about