At the 2024 general election, new constituency boundaries came into effect following the 2023 Boundary Review. This was a major reconfiguration of the UK’s electoral geography:

• England gained 10 constituencies, rising from 533 to 543.
• Scotland dropped from 59 to 57 constituencies.
• Wales saw the most significant reduction, from 40 to 32 constituencies.
• Northern Ireland remained at 18 constituencies.

Only 57 constituencies across England (11% of the total) remain completely unchanged. The others have either:

• Had new boundaries while retaining their current name
• Changed their name but not their boundaries
• Or undergone both a name and boundary change.

Each constituency has an electorate size within 5% of the UK electoral quota (set at 73,393 in 2023). This ensures fairer representation, so each MP represents a broadly similar number of voters. The first-past-the-post system is used, meaning the candidate with the most votes in each constituency is elected.

Explore UK Parliament Constituency boundaries on a map