# Counter-Terrorism and Border Security Act 2019, Paragraph 46


(1) Paragraph 43 material may be retained for as long as a national security determination made by a chief officer of police has effect in relation to it.
(2) A national security determination is made if a chief officer of police determines that it is necessary for any paragraph 43 material to be retained for the purposes of national security.
(3) A national security determination—
(a) must be made in writing,
(b) has effect for a maximum of 5 years beginning with the date on which the determination is made, and
(c) may be renewed.
(4) In this paragraph “chief officer of police” means—
(a) a chief officer of police of a police force in England and Wales,
(b) the chief constable of the Police Service of Scotland, or
(c) the Chief Constable of the Police Service of Northern Ireland.

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Source: https://www.legislation.gov.uk/ukpga/2019/3/schedule/3/paragraph/46 (the official version)
Page: https://openlegislation.uk/counter-terrorism-and-border-security-act-2019/schedule-3/paragraph-46
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.