UK parliamentary by-elections since 1945
This list notes the number of by-elections by session since 1945-46 and also lists the successful candidate in by-elections since 2005.

General election results 7 June 2001. House of Commons Library Research Paper 01/54.
General election results 7 June 2001 (698 KB , PDF)
General election results 7 June 2001. House of Commons Library Research Paper 01/54.
General election results 7 June 2001 (698 KB , PDF)
This list notes the number of by-elections by session since 1945-46 and also lists the successful candidate in by-elections since 2005.
This Commons Library Briefing Paper sets out results of the by-elections held in the 2019 Parliament. Full details are presented in the associated PDF but an overview of the recent by-election results are shown below.
Use the interactive dashboard to explore data for parliamentary constituencies, covering topics including unemployment, house prices and election results