has come into the possession of any person by means of the exercise of a statutory power to seize, detain, inspect, search or otherwise to interfere with documents or other property, or is likely to do so;

has come into the possession of any person by means of the exercise of any statutory power to intercept communications, or is likely to do so;

has come into the possession of any person by means of the exercise of any power conferred by an authorisation under section 22(3) F1“, (3B) or (3F)” or under Part II, or as a result of the giving of a notice under section 22(4), or is likely to do so;

has come into the possession of any person as a result of having been provided or disclosed in pursuance of any statutory duty (whether or not one arising as a result of a request for information), or is likely to do so; or

has, by any other lawful means not involving the exercise of statutory powers, come into the possession of any of the intelligence services, the police F2, SOCAF3, SCDEA or F4Her Majesty's Revenue and Customs , or is likely so to come into the possession of any of those services, the police F2, SOCAF3, SCDEA or F4Her Majesty's Revenue and Customs .

that a key to the protected information is in the possession of any person,

that the imposition of such a requirement is proportionate to what is sought to be achieved by its imposition, and

that it is not reasonably practicable for the person with the appropriate permission to obtain possession of the protected information in an intelligible form without the giving of a notice under this section,

in the interests of national security;

for the purpose of preventing or detecting crime; or

in the interests of the economic well-being of the United Kingdom.

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 protected information to which the notice relates;

must specify the matters falling within subsection (2)(b)(i) or (ii) by reference to which the notice is given;

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

must specify the office, rank or position of the person who for the purposes of Schedule 2 granted permission for the giving of the notice or (if the person giving the notice was entitled to give it without another person’s permission) must set out the circumstances in which that entitlement arose;

must specify the time by which the notice is to be complied with; and

must set out the disclosure that is required by the notice and the form and manner in which it is to be made;

that more than one person is in possession of the key to any protected information,

that any of those persons is in possession of that key in his capacity as an officer or employee of any body corporate, and

that another of those persons is the body corporate itself or another officer or employee of the body corporate,

that any of those persons is in possession of that key in his capacity as an employee of a firm, and

that another of those persons is the firm itself or a partner of the firm,

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.

is intended to be used for the purpose only of generating electronic signatures; and

has not in fact been used for any other purpose.