http://www.legislation.gov.uk/ukpga/1973/36/section/1/1999-12-02Northern Ireland Constitution Act 1973An Act to make new provision for the government of Northern Ireland.texttext/xmlenStatute Law Database2017-10-151999-12-02Part I Preliminary Status of Northern IrelandF11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .