18Orders for possession
(1)The sheriff shall not make an order for possession of a house let on an assured tenancy except on one or more of the grounds set out in Schedule 5 to this Act.
(2)The following provisions of this section have effect, subject to section 19 below, in relation to proceedings for the recovery of possession of a house let on an assured tenancy.
(3)If the sheriff is satisfied that any of the grounds in Part I of Schedule 5 to this Act is established then, subject to subsection (6) below, he shall make an order for possession.
(4)If the sheriff is satisfied that any of the grounds in Part II of Schedule 5 to this Act is established, he shall not make an order for possession unless he considers it reasonable to do so.
(5)Part III of Schedule 5 to this Act shall have effect for supplementing Ground 9 in that Schedule and Part IV of that Schedule shall have effect in relation to notices given as mentioned in Grounds 1 to 5 of that Schedule.
(6)The sheriff shall not make an order for possession of a house which is for the time being let on an assured tenancy, not being a statutory assured tenancy, unless—
(a)the ground for possession is Ground 2 or Ground 8 in Part I of Schedule 5 to this Act or any of the grounds in Part II of that Schedule, other than Ground 9 or Ground 10 or Ground 17; and
(b)the terms of the tenancy make provision for it to be brought to an end on the ground in question.
(7)Subject to the preceding provisions of this section, the sheriff may make an order for possession of a house on grounds relating to a contractual tenancy which has been terminated; and where an order is made in such circumstances, any statutory assured tenancy which has arisen on that termination shall, without any notice, end on the day on which the order takes effect.