This page contains a list of all the UK government departments and other public organisations we can investigate.
You can also use our complaint checker tool 'Can we look into your complaint?' to find out if we can investigate the organisation you want to complain about. It will take you to the correct complaint form.
If you are still not sure, this page will tell you what we can and can't help with or you can ring us 0345 015 4033.
- Immigration Enforcement
- Immigration Services Commissioner
- Imperial War Museum
- Independent Advisory Panel on Deaths in Custody
- Independent Agricultural Appeals Panel
- Independent Case Examiner
- Independent Commission for Aid Impact
- Independent Living Fund (2006)
- Independent Medical Expert Group
- Independent Monitoring Authority for Citizens’ Rights Agreements
- Independent Reconfiguration Panel
- Independent Scientific Group on Cattle TB
- Industrial Development Advisory Board
- Industrial Injuries Advisory Council
- Information Commissioner (ICO)
- Insolvency Service
- Institute for Apprenticeships and Technical Education
- Intellectual Property Office (IPO)