http://www.legislation.gov.uk/ukpga/2016/25/section/71/enactedInvestigatory Powers Act 2016enKing's Printer of Acts of Parliament2019-08-16 Part 3 71 1 The Secretary of State may by regulations modify section 70 or Schedule 4. 2 Regulations under subsection (1) may in particular— a add a public authority to, or remove a public authority from, the list in column 1 of the table, b modify an entry in column 2 of the table, c impose or remove restrictions on the authorisations that may be granted by a designated senior officer with a specified public authority, d impose or remove restrictions on the circumstances in which or purposes for which such authorisations may be granted by a designated senior officer. 3 The power to make regulations under subsection (1) includes power to make such modifications in any enactment (including this Act) as the Secretary of State considers appropriate in consequence of a person becoming, or ceasing to be, a relevant public authority because of regulations under that subsection.