5(1)Where sub-paragraph (2) or (3) applies, the Secretary of State may serve on a person a notice (a “stop notice”)—
(a)prohibiting the person from carrying on an activity specified in the notice, or
(b)prohibiting the person from carrying on an activity specified in the notice until the person has taken the steps specified in the notice.
(2)This sub-paragraph applies where—
(a)the person is carrying on the activity, and
(b)the Secretary of State reasonably believes that the activity as carried on by the person involves or is likely to involve the person committing an offence under section 12.
(3)This sub-paragraph applies where—
(a)the person is likely to carry on the activity, and
(b)the Secretary of State reasonably believes that the activity as carried on by the person will involve or will be likely to involve the person committing an offence under section 12.
(4)Steps referred to in sub-paragraph (1)(b) must be steps to secure that the activity is carried on or (as the case may be) will be carried on in a way that does not involve the person acting as mentioned in sub-paragraph (2)(b) or (3)(b).