16A.—(1) The lease may require the tenant to bear a reasonable part of the costs incurred by the landlord—
(a)in discharging or insuring against the obligations imposed by the covenants implied by virtue of paragraph 14(2) (repairs, making good structural defects, provision of services, etc.), or
(b)in insuring against the obligations imposed by the covenant implied by virtue of paragraph 14(3) (rebuilding or reinstatement, etc.),
and to the extent that by virtue of paragraph 15(3) (effect of provision of superior lease) such obligations are not imposed on the landlord, to bear a reasonable part of the costs incurred by the landlord in contributing to costs incurred by a superior landlord or other person in discharging or, as the case may be, insuring against obligations to the like effect.
(2) Where the lease requires the tenant to contribute to the costs of insurance, it shall provide that the tenant is entitled to inspect the relevant policy at such reasonable times as may be specified in the lease.
(3) Where the landlord does not insure against the obligations imposed by the covenant implied by virtue of paragraph 14(3), or, as the case may be, the superior landlord or other person does not insure against his obligations to the like effect, the lease may require the tenant to pay a reasonable sum in place of the contribution he could be required to make if there were insurance.
(4) Where in any case the obligations imposed by the covenants implied by virtue of paragraph 14(2) or (3) are modified in accordance with paragraph 14(4) (power of county court to authorise modification), the references in this paragraph are to the obligations as so modified.
(5) This paragraph has effect subject to paragraph 16B (restrictions in certain cases as regards costs incurred in the initial period of the lease).