The Department for Constitutional Affairs (DCA) was a United Kingdom government department that existed from 12 June 2003 to 9 May 2007. Created under the Blair administration to modernise the relationship between government, the courts, and the constitution, it took on responsibilities that had previously been scattered across older offices. Its nearly four years of operation produced some of the most significant structural changes to the British justice system, most notably the Constitutional Reform Act 2005.
Key facts
- Country: United Kingdom
- Founded: 12 June 2003
- Dissolved: 9 May 2007
- Type: department of the United Kingdom Government
Responsibilities
The DCA’s principal responsibilities covered the running of the courts and justice system, the protection of legal and human rights, the administration of legal aid, and the oversight of judicial appointments. It also led the government’s work on modernising the constitution, a task given formal shape by the Constitutional Reform Act 2005.
Among the bodies associated with the DCA were HM Land Registry, the Office for Judicial Complaints, and the newly created Judicial Appointments Commission. These organisations formed a cluster of functions that connected the administration of justice to broader constitutional governance.
Her Majesty’s Courts Service
On 1 April 2005, the DCA established Her Majesty’s Courts Service (HMCS) as an executive agency, acting under the authority of the Courts Act 2003. HMCS brought together two previously separate organisations, the Magistrates’ Courts Service and the Court Service, into a single body.
The Constitutional Reform Act 2005
The DCA prepared the explanatory notes to the Constitutional Reform Act 2005, the legislation that reshaped the highest levels of the British legal and parliamentary order. The Act received Royal Assent on 24 March 2005 and accomplished three significant changes: it established the Supreme Court of the United Kingdom, it abolished the appellate jurisdiction of the House of Lords, and it modified the ancient office of Lord Chancellor.
Leadership and Dissolution
Sir Alex Allan served as Permanent Secretary of the DCA from 1 August 2004 until the department’s dissolution on 9 May 2007. He was the last person to hold that office within the DCA and went on to become the first Permanent Secretary of the Ministry of Justice, the department that succeeded it.
The DCA was dissolved on 9 May 2007, ending a lifespan of nearly four years. Its functions passed to the newly formed Ministry of Justice, which took over responsibility for the courts, judicial appointments, and the other areas the DCA had administered.
Did you know
- Lord Falconer of Thoroton holds the distinction of being the only person ever to carry the title Secretary of State for Constitutional Affairs. Before entering government, he had shared a flat with Prime Minister Tony Blair, who appointed him to lead the new department when it was created in June 2003. (1066.co.nz)
- The office of Permanent Secretary of the DCA came attached to one of the older positions in British public administration: the Clerk of the Crown in Chancery. That historic post carried responsibility for overseeing elections to the House of Commons, maintaining the Roll of the Peerage, and preparing royal documents including warrants. (en-academic.com)
Data sources
Data updated: 2026-10-28