must be granted in writing or (if not in writing) in a manner that produces a record of its having been granted;

must describe the conduct to which this Chapter applies that is authorised and the communications data in relation to which it is authorised;

must specify the matters falling within section 22(2) by reference to which it is granted; and

must specify the office, rank or position held by the person granting the authorisation.

must be given in writing or (if not in writing) must be given in a manner that produces a record of its having been given;

must describe the communications data to be obtained or disclosed under the notice;

must specify the matters falling within section 22(2) by reference to which the notice is given;

must specify the office, rank or position held by the person giving it; and

must specify the manner in which any disclosure required by the notice is to be made.

an authorisation under section 22(3), (3B) or (3F) to which section 23A applies, or

a notice under section 22(4) to which section 23A applies.

the person giving the notice; or

such other person as may be specified in or otherwise identified by, or in accordance with, the provisions of the notice;

the person giving the notice holds an office, rank or position with a police force (“notifying force”);

the chief officer of police of the notifying force has made an agreement under section 23(1) of the Police Act 1996 with the chief officer of police of one or more other police forces; and

the person specified in or otherwise identified in the notice holds an office, rank or position with a collaborative force.

its chief officer of police is a party to the agreement mentioned in subsection (3A)(b); and

the persons holding offices, ranks or positions with it are permitted by the terms of the agreement to be specified or otherwise identified in notices under section 22(4) given by a person holding an office, rank or position with the notifying force.

any police force maintained under section 2 of the Police Act 1996 (police forces in England and Wales outside London);

the metropolitan police force; and

the City of London police force.

the person giving the notice holds an office, rank or position with a Scottish police force (“Scottish notifying force”);

the chief constable of the Scottish notifying force has made an agreement under section 12(1) of the Police (Scotland) Act 1967 with the chief constable of one or more other Scottish police forces; and

the person specified in or otherwise identified in the notice holds an office, rank or position with a collaborative force.

its chief constable is a party to the agreement mentioned in subsection (3D)(b); and

the persons holding offices, ranks or positions with it are permitted by the terms of the agreement to be specified or otherwise identified in notices under section 22(4) given by a person holding an office, rank or position with the Scottish notifying force.

shall not authorise or require any data to be obtained after the end of the period of one month beginning with the date on which the authorisation is granted or the notice given; and

in the case of a notice, shall not authorise or require any disclosure after the end of that period of any data not in the possession of, or obtained by, the postal or telecommunications operator at a time during that period.

that it is no longer necessary on grounds falling within subsection (2) of that section for the requirements of the notice to be complied with, or

that the conduct required by the notice is no longer proportionate to what is sought to be achieved by obtaining communications data to which the notice relates,