2(1)In any proceedings under section 8, in a case to which section 16 applies, the complainant or the occupier may ask the tribunal hearing the complaint to direct that the lessor be joined or sisted as a party to the proceedings.
(2)The request shall be granted if it is made before the hearing of the complaint begins.
(3)The tribunal may refuse the request if it is made after the hearing of the complaint begins.
(4)The request may not be granted if it is made after the tribunal has determined the complaint.
(5)Where a lessor has been so joined or sisted as a party to the proceedings, the tribunal may determine—
(a)whether the lessor has—
(i)refused consent to the alteration, or
(ii)consented subject to one or more conditions, and
(b)if so, whether the refusal or any of the conditions was unreasonable,
(6)If, under sub-paragraph (5), the tribunal determines that the refusal or any of the conditions was unreasonable it may take one or more of the following steps—
(a)make such declaration as it considers appropriate;
(b)make an order authorising the occupier to make the alteration specified in the order;
(c)order the lessor to pay compensation to the complainant.
(7)An order under sub-paragraph (6)(b) may require the occupier to comply with conditions specified in the order.
(8)Any step taken by the tribunal under sub-paragraph (6) may be in substitution for, or in addition to, any step taken by the tribunal under section 8(2).
(9)If the tribunal orders the lessor to pay compensation it may not make an order under section 8(2) ordering the occupier to do so.