4(1)This paragraph applies if—
(a)a regulated activity provider permits B to engage in regulated activity,
(b)B is supplied by a personnel supplier, and
(c)the permission does not have continuous effect for a period exceeding the prescribed period.
(2)The regulated activity provider obtains an appropriate verification in accordance with this Part if, during the prescribed period, he obtains written confirmation from the personnel supplier—
(a)that the personnel supplier is appropriately registered in relation to B,
(b)that the personnel supplier has no reason to believe that B is barred from the activity, and
(c)that the personnel supplier has no reason to believe that B is not subject to monitoring in relation to the activity.