Service Act 1989 may not relate to property in the
British Islands unless it authorises the taking of
action in relation to conduct within subsection
(3B) below.
(3B) Conduct is within this subsection if it
constitutes (or, if it took place in the United
Kingdom, would constitute) one or more offences,
and either (a)
it involves the use of violence, results in
substantial financial gain or is conduct
by a large number of persons in pursuit
of a common purpose; or
(b)
the offence or one of the offences is an
offence for which a person who has
attained the age of twenty-one and has no
previous convictions could reasonably be
expected to be sentenced to imprisonment
for a term of three years or more.
(4) Subject to subsection (5) below, the Security
Service may make an application under subsection
(2) above for a warrant to be issued authorising
that Service (or a person acting on its behalf) to
take such action as is specified in the warrant on
behalf of the Intelligence Service or GCHQ and,
where such a warrant is issued, the functions of
the Security Service shall include the carrying out
of the action so specified, whether or not it would
otherwise be within its functions.
(5) The Security Service may not make an
application for a warrant by virtue of subsection
(4) above except where the action proposed to be
authorised by the warrant—
(a)
is action in respect of which the
Intelligence Service or, as the case may
be, GCHQ could make such an
application; and
(b)
is to be taken otherwise than in support of the
prevention or detection of serious crime
6 Warrants: procedure and duration, etc.
(1) A warrant shall not be issued except—