Parliamentary boundary changes – what are they, what politicians will be affected, how do they change constituencies and when will they happen?
PROPOSALS for redrawing the political map of Britain have been laid out by the Boundary Commission.
Under the plans, the number of MPs is set to be slashed with high profile figures facing a battle to find a seat. Here's what you need to know about the changes.
What are parliamentary boundary changes?
The Boundary Commission is proposing reducing the number of House of Commons seats, making constituencies more equal in size and in terms of the number of voters.
The law requires the size and shape of parliamentary boundaries to be periodically reviewed to keep up with changes in population.
A review is necessary because population increases and internal migration affect the number of voters in each constituency.
The final recommendations are largely unchanged from proposals set out last year.
How do they change the electoral constituencies?
Under the proposals, the number of constituencies will be cut from 650 to 600.
The aim is also to make constituencies have between 71,031 and 78,507 voters each.
England will see the number of House of Commons seats reduced from England 533 to 501, Scotland from 59 to 53, Wales from 40 to 29 and Northern Ireland from 18 to 17.
Who is likely to be affected?
A number of high profile politicians could find themselves having to deal with their constituencies being redrawn or disappearing.
The changes are expected to benefit the Conservatives with Labour leader Jeremy Corbyn seeing his Islington North seat being wiped out.
But many Tories are also under threat from the proposed changes.
Former Foreign Secretary Boris Johnson faces a fight to retain his 5,034 majority in Uxbridge & Ruislip South.
The seat will lose Tory-leaning area of Yiewsley and gain Labour-leaning Northolt.
Ex-Brexit Secretary David Davis' Haltemprice & Howden seat is also on course for abolition.
When will they happen?
The plans will need to secure the backing of MPs and the House of Lords.
Critics have warned that Brexit will mean more legislation in the coming years and that fewer MPs will mean less parliamentary scrutiny.
Labour is objecting to the changes but they are backed by Northern Ireland’s Democratic Unionist Party, on whose votes the Government relies in the House of Commons.
Sam Hartley, secretary to the Boundary Commission for England, said: "We're confident that the map we propose today is the best match of the legal rules Parliament has set us.
“It's now up to Parliament to decide whether these boundaries will be used at the next general election."
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