# Investigatory Powers Act 2016, Paragraph 5


(1) The Commissioner may not vary a notice of intent except as set out in sub-paragraph (2).
(2) The Commissioner may vary a notice of intent by extending the period mentioned in paragraph 4(4)(f) or (g).
(3) Sub-paragraph (1) does not prevent the Commissioner from serving a new notice of intent instead of varying such a notice.
(4) The Commissioner may cancel a notice of intent.
(5) A variation or cancellation of a notice of intent is effected by serving on the person on whom the notice was served a notice setting out the variation or cancellation.

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Source: https://www.legislation.gov.uk/ukpga/2016/25/schedule/1/paragraph/5 (the official version)
Page: https://openlegislation.uk/investigatory-powers-act-2016/schedule-1/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.