72.—(1) Where—

(a) section 70 applies,

(b) the notice of termination of the head-tenancy does not require the termination of the sub-tenancy, and

(c) no dispute in relation to the termination of the head-tenancy is referred under Part 6 to the Board,

the head-tenant must, within F231[90 days] from the receipt of that notice, notify the sub-tenant of the contents of that notice.

(2) Where—

(a) section 70 applies,

(b) the notice of termination of the head-tenancy does not require the termination of the sub-tenancy, and

(c) a dispute in relation to the termination of the head-tenancy is referred under Part 6 to the Board,

the head-tenant must, within F231[90 days] from the receipt of that notice, notify the sub-tenant—

(i) of the contents of that notice, and

(ii) of the fact that that dispute has been referred to the Board.

(3) The particulars of the determination order (if any) F232[issued] by the Board on foot of that reference must be notified by the head-tenant to the sub-tenant within 14 days from the receipt by the head-tenant of the order.

(4) “Head-tenancy”, “head-tenant”, “sub-tenancy” and “sub-tenant” in this section shall be construed in accordance with section 70.