substantial value (whether by itself or together with other
material) to the investigation for the purpose of which the
application is made, but that the material cannot at the
time of the application be particularized; and
(c)
that
-
(i) it is not practicable to communicate with any
person entitled to grant entry to the premises; or
(ii) entry to the premises will not be granted unless a
warrant is produced; or
(iii) the investigation for the purposes of which the
application is made might be seriously prejudiced unless an
authorized officer arriving at the premises could secure
immediate entry to them.
(5) Where an authorized officer has entered premises in the
execution of a warrant issued under this section, he may seize and
retain any material, other than items subject to legal privilege,
which is likely to be of substantial value (whether by itself or
together with other material) to the investigation for the purpose of
which the warrant was issued.
(6) Any person who hinders or obstructs an authorized officer
in the execution of a warrant issued under this section commits an
offence and is liable -