What we do

We ensure the smooth working of the devolution settlement in Northern Ireland. We represent Northern Irish interests within the UK government and we represent the UK government in Northern Ireland.

NIO is a ministerial department, supported by 3 agencies and public bodies.

Read more about what we do

We produce detailed guidance in these categories

  1. Devolution: how it affects policies and services

    Advice for public servants and other agencies about devolved responsibilities and accountability. Read more

Contact NIO

Office address (Belfast)

Stormont House
Belfast
Northern Ireland

BT4 3SH

Office address (London)

1 Horse Guards Road
London

SW1A 2HQ

Press Office (media enquiries)

Make an FOI request

  1. Read about the Freedom of Information (FOI) Act and how to make a request
  2. Check our previous releases to see if we’ve already answered your question
  3. Make a new request by contacting us at:

Freedom of information requests

Freedom of Information Manager
1 Horse Guards Road
London
SW1A 2HQ

Corporate information

Read about the types of information we routinely publish in our Publication scheme.