Wales is set to be the big loser in the UK voting card switch. The officials plan to cut off eight constituencies and hand them over to England.
Following proposals to make voter populations equal in each constituency, England is expected to gain 10 MPs, while Wales will lose eight and Scotland is on track to cut by two.
When the four national border reviews are completed in 2023, England will have 543 MPs, Wales 32 and Scotland 57.
Northern Ireland will continue to have 18 MPs in the House of Commons, but some of the current borders could shift under plans, according to the region’s Borders Commission.
The Office for National Statistics (ONS) released the latest voter data on Tuesday on which the review will be based. 47.5 million voters are to be divided into 650 constituencies with a size between 69,724 and 77,062 people.
Some island constituencies, such as the Isle of Wight and the Isle of Anglesey, have received a special exemption that is outside the population range.
The new constituency boundaries will come into effect in 2023 and will be applied in the next parliamentary elections a year later.
Tim Bowden, Secretary of the Boundary Commission for England, said: “Today we begin our work on reviewing the constituency boundaries in England.
“Parliament has set strict rules for greater electoral equality between the new constituencies. These rules and the increase in the total number of constituencies in England mean that there are likely to be big changes across the country.”
Mr Bowden said a first draft of proposals will be released this summer and a public consultation will follow to ensure the plans “take into account local relationships and best reflect the local geography”.
Based on the results of the ONS population, the number of MPs in the regions of England will shift.
It is envisaged that London will win two MPs, increasing to 75 in total, while the Northwest and Northeast – two areas where Boris Johnson made gains in the 2019 election at Labor’s expense – could cut their representation by two prove to be detrimental to the Prime Minister’s so-called “blue wall”.
The reduction in seats in Wales could also injure a majority of Mr Johnson’s Commons.
However, the Southeast and Southwest – two regions where Conservatives traditionally vote well – will both create new seats.
Seven more seats, including dividing the Isle of Wight into two constituencies, will be set up in the southeast and increased to 89, while the southwest will be increased from 55 to 58.
The eastern part of the country, including East Anglia, will get three seats, the West Midlands will lose two and the East Midlands will gain one.
In Yorkshire and Humber there will be no change that will stay at 54.