As head of the Home Office, the Home Secretary is legally accountable for national security and for the role that policing plays in its response (Policing Protocol Order 2023, s30).
Mae Deddf Cyfiawnder a Diogelwch 2013 yn caniatáu i Ysgrifennydd Gwladol wneud cais i achos cyfreithiol gael ei gynnal gan ddilyn gweithdrefn deunydd caeedig.