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Dissolution of Parliament

The dissolution of Parliament took place on Thursday 30 May 2024. All business in the House of Commons and House of Lords has come to an end. There are currently no MPs and every seat in the Commons is vacant until after the general election on 4 July 2024.

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Portcullis House: Key dates

1988 - Space Audit
An audit of the whole Parliamentary estate revealed an urgent need for more working space.

1989 - Site Study Commissioned
The architects Michael Hopkins and Partners undertook a detailed study of the site.

1992 - Project Commissioned
The Portcullis House project was commissioned by Parliament.

1993 - Detailed Designs
Michael Hopkins and Partners published their first detailed designs for the building by this date.

1994 - Site Cleared
Existing Victorian buildings on the site were demolished.

1998 - Construction Began
Construction of the structure above ground began on 5 January.

2000 - Building Works Completed
Certificate of completion issued on 18 August; MPs began to occupy the building in September.

2001 - Offical Opening
Portcullis House was officially opened by the Queen on 27 February; the building won the timber structure award at the Timber Industry Awards and became the biggest draw at the London Open House event in September.

Also within Living Heritage

Find out more about the history and features of this magnificent building

Virtual tours of Parliament

Explore inside Portcullis House.