| An immigration officer who is a senior official and who is designated for the purpose by the Secretary of State. | A senior official in the department of the Secretary of State by whom functions relating to immigration are exercisable who is designated for the purpose by the Secretary of State. | An immigration officer. |
| An officer of Revenue and Customs who is a senior official and who is designated for the purpose by the Commissioners for Her Majesty’s Revenue and Customs. | An officer of Revenue and Customs who is a senior official and who is designated for the purpose by the Commissioners for Her Majesty’s Revenue and Customs. | An officer of Revenue and Customs. |
| A designated customs official who is a senior official and who is designated for the purpose by the Secretary of State. | A designated customs official who is a senior official and who is designated for the purpose by the Secretary of State. | A designated customs official. |
| The Chair of the Competition and Markets Authority. | An officer of the Competition and Markets Authority designated by it for the purpose. | An officer of the Competition and Markets Authority. |
| The chairman, or a deputy chairman, of the Independent Police Complaints Commission. | A member (other than the chair or a deputy chairman) of the Independent Police Complaints Commission who is designated by the chairman for the purpose. | A person designated under paragraph 19(2) of Schedule 3 to the Police Reform Act 2002 to take charge of, or to assist with, the investigation to which the warrant under section 106(1) relates (or would relate if issued). |
| The Police Investigations and Review Commissioner. | A staff officer of the Police Investigations and Review Commissioner who is designated by the Commissioner for the purpose. | A staff officer of the Police Investigations and Review Commissioner. |