The Northern Ireland Office (NIO; Irish: Oifig Thuaisceart Éireann,[3] Ulster-Scots: Norlin Airlann Oaffis)[4] is a ministerial department of the Government of the United Kingdom.

The NIO is led by the Secretary of State for Northern Ireland and is based at Erskine House in Belfast City Centre and 1 Horse Guards Road in London.

[16] The Sunningdale Agreement in 1973 resulted in a brief, power-sharing Northern Ireland Executive, which was ended by the Ulster Workers' Council strike on 28 May 1974.

Following the Good Friday Agreement on 10 April 1998, devolution returned to Northern Ireland on 2 December 1999.

The Northern Ireland Executive was suspended on 15 October 2002 and direct rule returned until devolution was restored on 8 May 2007.

The NIO ministers are as follows, with cabinet members in bold:[17][18] Supporting the Secretary of State in his responsibilities, including: Legacy stakeholder engagement; Strengthening and sustaining the Union in Northern Ireland; Vital security casework; Building substantive relationships across sectors and communities; Leading workstreams on New Decade, New Approach Agreement; and the NI Protocol As Attorney General for England and Wales, The Lord Hermer PC KC is Advocate General for Northern Ireland, advising the UK Government on Northern Ireland law.