(2)Where such a dispute has arisen, the landlord or the tenant may give notice in writing to the other specifying the dispute and stating that, unless before the end of the period of two months beginning with the day on which the notice is given the parties have appointed an arbitrator by agreement, he proposes to apply to [F1a professional authority for the appointment of an arbitrator by that authority].

(3)Where a notice has been given under subsection (2) above, but no arbitrator has been appointed by agreement, either party may, after the end of the period of two months referred to in that subsection, apply to [F2a professional authority for the appointment of an arbitrator by that authority].

[F3(3A)A party may not make an application to a professional authority under subsection (3) above in relation to a dispute if the other party has already made an application to a professional authority under that subsection in relation to that dispute.]

F4(4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(5)Subsections (1) to (3) above do not apply in relation to—

(a)the determination of rent in pursuance of a statutory review notice (as defined in section 10(1) of this Act),

(b)any case falling within section 19(1) of this Act, F5...

(c)any claim for compensation under Part III of this Act [F6, or

(d)any dispute relating to rent review, in any case where Part II of this Act is excluded by virtue of section 9(c)(ii) of this Act.]