Paragraph 29

in England and Wales, a Crown Prosecutor,

in Scotland, the Lord Advocate or a procurator fiscal,

in Northern Ireland, the Director of Public Prosecutions for Northern Ireland,

in any part of the United Kingdom, a police officer of at least the rank of superintendent,

shall authorise the further detention under section 41 of a specified person for a specified period, and

shall state the time at which it is issued.

with the time of his arrest under section 41, or

if he was being detained under Schedule 7 when he was arrested under section 41, with the time when his examination under that Schedule began.

the application for the warrant is an application for a warrant specifying a shorter period; or

the judicial authority is satisfied that there are circumstances that would make it inappropriate for the specified period to be as long as the period of seven days mentioned in sub-paragraph (3).

in England and Wales, F5. . . a District Judge (Magistrates’ Courts) who is designated for the purpose of this Part F6by the Lord Chief Justice of England and Wales F7. . . ,

in Scotland, the sheriff, and

in Northern Ireland, a county court judge, or a resident magistrate who is designated for the purpose of this Part F8by the Lord Chief Justice of Northern Ireland . . . .

the holder of one of the offices listed in Schedule 1 to the Justice (Northern Ireland) Act 2002;

a Lord Justice of Appeal (as defined in section 88 of that Act).