6. Sections 37 and 38 of the Act only have effect in relation to—
(a)authorisations granted or renewed under section 22(3), (3B) or (3F) of the Regulation of Investigatory Powers Act 2000 on or after 1st November 2012;
(b)notices given or renewed under section 22(4) of that Act on or after 1st November 2012;
(c)authorisations granted under section 28 or 29 of that Act on or after 1st November 2012.