The United Kingdom constitution – a mapping exercise
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.

Heads of state and dignitaries who have addressed MPs and Members of the House of Lords since 1935.
Addresses to Members of both Houses of Parliament (24 KB , Excel Spreadsheet)
In addition to the King’s Speech at the State Opening of Parliament, formal Addresses to both Houses of Parliament are made by the Monarch.
State or other visits to the UK by leading figures may be marked by a speech given to Members of both Houses of Parliament. Formal Addresses to both Houses can be made by Heads of State and by other foreign leaders. In some circumstances, visiting foreign dignitaries give speeches in Parliament which are not formal Addresses.
The downloadable Excel file lists Heads of State and dignitaries who have addressed MPs and Members of the House of Lords since 1935. Source details are available in the Excel file.
Additional commentary and analysis from the Hansard Society can be found at Addresses to both Houses of Parliament and Trump, State Visits and Parliament: precedent and process.
The Parliament: facts and figures series covers topics including elections, government, legislation, Members and parliamentary business.
Please get in touch with us at papers@parliament.uk with comments, corrections, or if you would like to access the data in a different format.
Addresses to Members of both Houses of Parliament (24 KB , Excel Spreadsheet)
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.
A briefing paper on the Scottish Secretary's "veto" of the Gender Recognition Reform (Scotland) Bill under section 35 of the Scotland Act 1998
Known living former Members of Parliament.