Research
Browse by topic, from Brexit and the EU to world affairs. We produce in-depth analysis on legislation, debates and topical issues.
Research for Lords business
Authoritative research covering all major bills and debates
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Collections
Access our print and online collections, including books, journals and newspapers. Available with a parliamentary login.
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Data dashboards
Explore interactive data visualisations about the House of Lords. Includes data on current membership and regional representation.
King's Speech 2026
Browse research and reading lists for the House of Lords debates on the 2026 King's Speech.
Latest research
Read the most recent research on legislation, debates and topical issues
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Hereditary by-elections results: 2002 to 2024
Between 2002 and 2024, by-elections were held to replace excepted hereditary peers who left the House of Lords. In July 2024, the House agreed to pause by-elections following the introduction of the House of Lords (Hereditary Peers) Bill. This bill was passed in 2026, ending the need for by-elections. This briefing provides a list of by-election results, including information on turnout and the number of candidates.
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House of Lords reform: Hereditary members at the end of the 2024–26 session
The right for hereditary peers to sit in the House of Lords has come to an end. This briefing lists the last hereditary peers sitting in the House of Lords when the House of Lords (Hereditary Peers) Act passed into law in March 2026, together with their length of service as a hereditary member. It also notes returns to the House as life peers.
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House of Lords data dashboard: Peerage creations
This page provides interactive data on the creation of life peerages in the House of Lords.
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