What constituency am I in?

Enter a postcode to see its Westminster constituency, with its MP, council and ward. Looking for your MP? Who is my MP?

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Your answer for SA18 1UF

SA18 1UF is in the Brecon, Radnor and Cwm Tawe parliamentary constituency.

  • Brecon, Radnor and Cwm TaweWestminster constituency · MP: David Chadwick (Liberal Democrat) Who is my MP?
  • Brycheiniog Tawe NeddSenedd constituency, electing six Members of the Senedd. It is the Brecon, Radnor and Cwm Tawe and Neath and Swansea East UK Parliament constituencies together. Its Members, on the Senedd's site
  • Neath Port TalbotCouncil What council am I in?
  • Gwaun-Cae-Gurwen and Lower BrynammanWard What ward am I in?

ONS places a whole postcode in one council, one ward and one constituency, from a single point. A few postcodes cross a boundary, so an address at the edge can belong to the one next door. Your council tax bill or your poll card settles it for your address.

See the full check for SA18 1UF

What is a constituency?

A parliamentary constituency is an area that elects one MP to the House of Commons at Westminster. A postcode is placed in one constituency.

This is your Westminster constituency (ONS Postcode Directory, August 2026). Scottish and Welsh postcodes also show their Scottish Parliament or Senedd constituency.

Constituency boundaries are reviewed from time to time, so a postcode can move to a different constituency when they are redrawn.

Is my constituency the same as my council?

No. A constituency elects an MP to Parliament. A council runs local services, and a ward elects councillors to that council.

The two sets of boundaries are drawn separately. One council area can be split between several constituencies, and a constituency can take in parts of more than one council area.

Who is my MP? Your MP, their party and how to contact them, from your postcode. Who is my MSP? Your constituency MSP and your seven regional MSPs, for a Scottish postcode. What council am I in? The council, borough or local authority for a postcode, and the county council where there is one.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; UK Parliament, read 14 October 2026.

Where the facts on this page come from

Contains Parliamentary information licensed under the Open Parliament Licence v3.0.

Licences: Open Government Licence v3.0; Open Parliament Licence v3.0.

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