Lascelles Principles [SEP] named after
period with a working majority in the House of Commons".
The convention has been in abeyance since 2011, when the Sovereign's prerogative power to dissolve Parliament was removed by the Fixed-term Parliaments Act 2011.
The letter.
During public discussion of the King's potential response to the outcome of the 1950 general election, which returned a very slim Labour Party majority in the House of Commons, the Lascelles Principles were formally stated in a letter by Sir Alan Lascelles, Private Secretary to King George VI,
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- John Beilby Lascelles (19 Feb 1884 to 13 Nov 1907)
- Richard Lascelles (30 Nov 1887 to 30 Nov 1887)
- Cynthia Rachael Lascelles (29 Aug 1885 to 6 Sep 1961), who married George Wentworth Warwick Bampfylde, 4th Baron Poltimore.