The UK is currently divided into 650 parliamentary constituencies, each of which is represented by one MP in the House of Commons. Although constituencies vary widely in area, the average number of voters in each constituency is approximately 68,175.
There are currently 533 constituencies in England, 59 in Scotland, 40 in Wales and 18 in Northern Ireland.
Constituency boundaries are kept under review by four permanent Boundary Commissions, one each for England, Scotland, Wales and Northern Ireland. The Commissions make reports at regular intervals, usually every 5 years, recommending any necessary changes due to population change or changes in local government boundaries.
What is my constituency?
You can find out what constituency you are in, and the MP who represents that constituency, by using the Find your MP service.