This table lists the number of seats in the House of Commons from 1707 to present day.

Parliament

Number of Seats

1707–1800

558

1801–1844

658

1844–1852

656

1852–1861

654

1861–1865

656

1865–1870

658

1870–1885

652

1885

648

1885–1918

670

1918–1922

707

1922–1945

615

1945–1950

640

1950–1955

625

1955–1974 (Feb)

630

1974–1983

635

1983–1992

650

1992–1997

651

1997–2005

659

2005–2010

646

2010–

650

The number of MPs has changed over the years as a result of the redistribution of seats and boundary changes to constituencies. The current number of seats, 650, resulted from the Fifth Periodical Review.

For more information on boundary reviews see the Library briefing, Constituency boundary reviews and the number of MPs

Parliament: facts and figures

This series of publications contains data on various subjects relating to Parliament and Government. Topics include legislation, MPs, select committees, debates, divisions and Parliamentary procedure.

  • Commons Research Briefing SN02384
  • Author: Sarah Priddy
  • Topics: Elections