6—Listening devices and optical surveillance devices—public
interest exception
(1) Section 4 does not
apply—
(a) to
the use of a listening device to overhear, record, monitor or listen to a
private conversation if the use of the device is in the public interest; or
(b) to
the installation, use or maintenance of a listening device under
subsection (2)(b)(iv) or (v) of that section if the use of the device is
in the public interest.
(2) Section 5 does not
apply—
(a) to
the use of an optical surveillance device to record visually or observe the
carrying on of a private activity if the use of the device is in the public
interest; or
(b) to
the installation, use or maintenance of an optical surveillance device under
subsection (4)(a)(iv) or (v), or subsection (4)(b), of that section
if the use of the device is in the public interest.