Constituency Boundary Changes

New boundaries for parliamentary constituencies were produced as part of a boundary review exercise completed in 2023.

The revised boundaries are intended to reflect population changes since the last constituency changes in 2010.

The Boundary Commission for Wales undertook the Welsh review which specifically only affects UK Parliamentary constituency boundaries.

Changes to constituency boundaries

The number of seats in the House of Commons will remain the same at 650.

Wales will lose eight parliamentary seats reducing from 40 to 32 with changes to all constituencies other than Ynys Môn in North Wales.

The boundaries used for local council and Senedd elections have not changed.

Rules about constituency size

The electorate range for all seats in the UK are now required to be between 69,724 and 77,062.

New constituencies in the Neath Port Talbot Council area

The new constituencies covering the majority of the Neath Port Talbot Council area are as follows:

• Aberafan Maesteg
• Neath and Swansea East

Nine electoral wards within the Neath Port Talbot area making up the Pontardawe, Upper Swansea Valley and Amman Valley will also be moved into the new constituency of:

• Brecon Radnor and Cwm Tawe

Further information on the Boundary Review process can be found on the Boundary Commission for Wales website.

Find out about upcoming elections in the Powys Council area.

Re-registering as an elector

You do not need to re-register. Your details will still be held by the local Electoral Registration Officer responsible for the area where you live and will be sent on to the Returning Officer to run the election.

Any enquiries in relation to electoral registration please contact the relevant Electoral Registration Office: