# Terrorism Prevention and Investigation Measures Act 2011, Paragraph 11

Extent: E+W+S+N.I.

(1) Paragraph 6 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 6 material to be retained for the purposes of national security.
(3) A national security determination—
(a) must be 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/2011/23/schedule/6/paragraph/11 (the official version)
Page: https://openlegislation.uk/terrorism-prevention-and-investigation-measures-act-2011/schedule-6/paragraph-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.