FOI ref: FOI-2023-1534
You asked
Please can you provide data for all current UK postcodes matched to the new Westminster Parliamentary Constituencies which will come in effect after the next General Election.
We said
Thank you for your request.
Westminster Parliamentary Constituencies are not included in postcode products until they become operative. Therefore, the new constituencies will not be published until after the next general election.
In the meantime, please see the associated downloads, which provide the latest postcode directory and attached are two look-ups:
- 'Parliamentary_Constituency_2010_to_Parliamentary_Constituency_2025_Lookup_for_Great_Britain' shows old Parliamentary Constituencies to new (future) ones
- 'Output_Area_2021_to_Parliamentary_Constituency_2025_Lookup_for_England_and_Wales' shows 2021 Output Areas to new Parliamentary Constituencies
Both Output Areas and current Parliamentary Constituencies are included in the Postcode Directory, which will enable you to create the data for England and Wales.
Please see the following link to the latest postcode directory.
Both Northern Ireland and Scotland will code their new parliamentary constituencies, either alphabetically or geographically, so you will need to contact the devolved administrations for their data as we do not hold this data.
Please see the following link to the Scotland boundary commission.
Please also see the following link for Northern Ireland Statistics and Research Agency (NISRA).