Thedissolution of the Parliament of the United Kingdom occurs automatically five years after the day on whichParliament first met following ageneral election,^[1] or on an earlier date by royal proclamation at the advice of theprime minister. Themonarch'sprerogative power todissolve Parliament was revived by theDissolution and Calling of Parliament Act 2022, which also repealed theFixed-term Parliaments Act 2011. By virtue of amendments made by the Dissolution and Calling of Parliament Act to Schedule 1 to theRepresentation of the People Act 1983, the dissolution of Parliament automatically triggers a general election.^[2]

The last dissolution of Parliament occurred on 30 May 2024, following the announcement that the2024 general election would be held on 4 July.^[3][4][5]

Parliament is dissolved by the British monarch on the Prime Minister's request. After agreeing to the request the King will authorise aproclamation at a Privy Council meeting, which he will thenorder to be issued under theGreat Seal of the Realm.^[6]

As soon as Parliament is dissolved,members of Parliament cease to hold office, and they may not enter thePalace of Westminster, although they and their staff continue to be paid until polling day. Ministers retain their positions until the election, but government activity is limited to prevent public funds being used to support the incumbent government's electoral campaign.^[7] Parliament is usuallyprorogued oradjourned before it is dissolved. Parliament may continue to sit for awash-up period of a few days after thePrime Minister has announced the date when Parliament will be dissolved, to finish some last items of parliamentary business. Business left unresolved after this period will not be entered into law.^[7]

After Parliament has dissolved, aroyal proclamation is made summoning a new Parliament, fixing the date when the new Parliament is to assemble, and requiring the issuing of writs of summons to the Lords Spiritual and Temporal andwrits of election for the members of the House of Commons. If Parliament is dissolved by proclamation, the proclamation dissolving it will usually also summon the next one. While it is the royal proclamation, and subsequentOrder in Council, which direct the issue of writs of election, the amended parliamentary election rules direct that a writ is to be deemed to have been received the day after Parliament has been dissolved^[2] and that therefore, the general election process can begin before the writ is received by returning officers. The poll for the general election is held 25working days (a day which is not a weekend,bank holiday or a day of national mourning or thanksgiving) after Parliament is dissolved. By tradition, a copy of the royal proclamation is delivered by hand from thePrivy Council Office toMansion House in theCity of London. The proclamation is then read out on the steps of theRoyal Exchange by theCommon Cryer and Serjeant-At-Arms of the City.^[8][9] Similar reading also takes place on theRoyal Mile in Edinburgh by theLord Lyon King of Arms. This tradition was again carried out in May 2024.^[8][10]

Prior to theTriennial Acts,Parliaments of England could be summoned and dissolved at theSovereign's discretion. The Acts mandated that gaps between parliaments must not exceed three years,^[11] but did not originally put in provisions for mandated dissolution, leading to theLong Parliament which was formed in 1640 and was not dissolved until 1660,^[12] and theCavalier Parliament which sat continuously for 18 years. The1694 Act set the maximum duration to three years, with mandatorygeneral elections between each. This legislation was carried forward into theParliament of Great Britain following the ratification of theActs of Union 1707.

TheSeptennial Act 1715 increased the maximum length of a parliament to seven years, after which time it would automatically expire.^[13] This was later amended by theParliament Act 1911, reducing the maximum term to five years. This could, however, be overridden at the pleasure of Parliament. The length of a Parliament has been extended on two occasions since 1911, once during each of the twoWorld Wars. At any time the Sovereign could dissolve Parliament and call a general election. In accordance withconstitutional convention, the Sovereign did not act independently, but at the request of thePrime Minister. Constitutional experts held that the monarch might refuse permission under theLascelles Principles if a Parliament had more than a year still to run and if another person could potentially command a majority in the House of Commons. In practice, this meant that a Prime Minister with a Commons majority and the support of his party hadde facto authority to dissolve Parliament at a time of his choosing. Prior to 1918, it was theCabinet who collectively sought permission from the monarch in order for Parliament to be dissolved. However, since 1918, the Prime Minister alone sought the permission of the Sovereign.^[14]

Fixed term parliaments were introduced by theFixed-term Parliaments Act 2011 following theConservative–Liberal Democrat coalition agreement promulgated after the 2010 election, thereby repealing the Septennial Act 1715 and abolishing the ability of the Prime Minister unilaterally to request an election prior to the expiry of the five-year term.^[15] By the Fixed-term Parliaments Act, general elections were to be held at fixed intervals and Parliament was to be dissolved 17, later 25,working days before the polling day for the next general election. The date for the next general election could be brought forward if theHouse of Commons passed a motion of no confidence in the Government or passed a motion for an early general election with a two-thirds majority.^[16] Strictly speaking, this was not a fixed term (as it is in theRiksdag of Sweden or theScottish Parliament), but only a semi-fixed term, since a parliament elected after an early dissolution was chosen for a full five-year period. The Act did not affect the Sovereign's power to prorogue Parliament.^[17]

Under the Fixed-term Parliaments Act,writs of election were issued to the returning officers of each constituency automatically by virtue of section 3(3) of the Act. This was due to the fact that the royal proclamation no longer summoned the holding of the election, but only the meeting of the new Parliament.

Parliament was dissolved automatically due to the expiration of its term for the first time on 30 March 2015, as opposed to being dissolved by royal proclamation. Although Prime MinisterDavid Cameron met the Queen on the day of the dissolution, the only business discussed was the calling of the new Parliament, and not a request for a dissolution, as had happened at every such meeting historically,^[18] and the subsequent royal proclamation made on 30 March simply called for the holding of the next Parliament.^[19] At the2015 general election, the period between the dissolution of the previous Parliament and the meeting of the new Parliament was the longest period the United Kingdom had been without a Parliament since 1924.^[20]

The 2017 general election was called by virtue of a motion for an early general election under the Fixed-term Parliaments Act. The motion was passed in the House of Commons with a vote of 522 to 13.^[21]

In accordance with the provisions of theEarly Parliamentary General Election Act 2019, Parliament was dissolved without passing the motion cited under the provisions of section 2(2) of theFixed-term Parliaments Act 2011, which was then the default mechanism for dissolving Parliament prior to the expiration of its term. The 2019 Act fixed the polling day for the next general election as 12 December 2019, as if it had under section 2(7) of the Fixed-term Parliaments Act.^[22] This caused Parliament to be dissolved by virtue of section 3(1) of the Fixed-term Parliaments Act on 6 November.

In December 2020, the Conservative government published a draft Fixed-term Parliaments Act 2011 (Repeal) Bill, later retitled theDissolution and Calling of Parliament Bill when it was introduced to the House of Commons in May 2021,^[23] which would repeal the Fixed-term Parliaments Act in its entirety, restore the monarch's prerogative powers to dissolve Parliament at the prime minister's request, and ensure that a parliamentary term automatically ends five years after a Parliament's first meeting, with the polling day being held 25 working days later.^[24] The bill was givenroyal assent on 24 March 2022.^[25] The first dissolution of Parliament under this bill occurred on 30 May 2024, following itsprorogation six days earlier.^[7]

• Frequently Asked Questions: General Election
• Election Timetables, House of Commons Library Research Paper 09/44, 13 May 2009
• Dissolution of Parliament 2010
• Prorogation of the 54th Parliament of the United Kingdom video onYouTube.

• Parliament of the United Kingdom
• Parliamentary procedure
• Constitution of the United Kingdom

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