Paragraph 4A F1

The provisions of this paragraph shall apply where—

The landlord or tenant under the tenancy may, by notice in writing served on his tenant or landlord, demand a reference to arbitration of the question whether any of the terms and conditions of the tenancy (including any term or condition relating to rent) should be varied in consequence of any change in the state of the land resulting from the occupation or use of the land in the exercise of rights conferred by the order; and subsection (3) of section 28 of the Act of 1995 shall apply in relation to a notice under this sub-paragraph as it applies in relation to a notice under subsection (2) of that section.

On a reference by virtue of this paragraph, the arbitrator shall determine what variations (if any) should be made in the terms and conditions of the tenancy, and the date (not being earlier than the end of the period of occupation) from which any such variations are to take effect or to be treated as having taken effect; and as from that date the tenancy shall have effect, or, as the case may be, shall be treated as having had effect, subject to any variations determined by the arbitrator under this paragraph.

The provisions of this paragraph shall not affect any right of the landlord or the tenant, or the jurisdiction of the arbitrator, under Part II of the Act of 1995; but where—

he may direct that proceedings on the two references shall be taken concurrently.