The 2023 Review of Parliamentary Constituencies will be conducted in accordance with the Parliamentary Constituencies Act 1986 (as amended).
The Rules of the Act set out the number of constituencies to be provided for Wales for the 2024 Westminster Parliamentary Election. It also sets out that all constituencies should have an electorate within ±5% of the UK average or quota.
Under the legislation the Commission will be required to base its recommendations on the number of electors whose names appear on the register of parliamentary electors published by the Office for National Statistics on 5 January 2021.
For the purposes of the 2023 Review, the total UK electorate to be used by the four UK Boundary Commissions is 47,558,398 and after applying the formula specified in the Act, the allocation of constituencies to each part of the UK is:
| Country | Electorate | Current allocation | New allocation |
| England* | 39,860,421 | 533 | 543 |
| Northern Ireland | 1,295,688 | 18 | 18 |
| Scotland** | 4,079,612 | 59 | 57 |
| Wales*** | 2,322,677 | 40 | 32 |
| Total | 47,558,398 | 650 | 650 |
* The electorate for England does not contain the electorate of the Isle of Wight. This area is permitted to create constituencies with an electorate that is more than 5% outside the UK electoral quota. The number of constituencies allocated to England includes the additional constituencies for the Isle of Wight.
** The electorate for Scotland does not contain the electorate of the two preserved constituencies which are a) Orkney and Shetland and b) Na h-Eileanan an Iar. These constituencies are permitted to have an electorate that is more than 5% outside the UK electoral quota. The number of constituencies allocated to Scotland includes the additional constituencies of Orkney and Shetland, and Na h-Eileanan an Iar.
*** The electorate for Wales does not contain the electorate of the Isle of Anglesey. This area is permitted to create a constituency with an electorate that is more than 5% outside the UK electoral quota. The number of constituencies allocated to Wales includes the additional constituency for the Isle of Anglesey.
The UK electoral quota is to the nearest whole number is 73,393. Each proposed constituency must therefore have an electorate that is between 69,724 and 77,062.
Initial Proposals for the Parliamentary constituencies in Wales will be published later this year which will be followed by a period of consultation. Please wait until the period of consultation starts before sending us your views.
If you would like more information please email us at bcw@boundaries.wales or telephone on 029 2046 4819.
