The right to acquire a new lease under this Chapter may be exercised in relation to a lease of a flat despite the fact that the lease is itself a lease granted under section 56; and the provisions of this Chapter shall, with any necessary modifications, apply for the purposes of or in connection with any claim to exercise that right in relation to a lease so granted as they apply for the purposes of or in connection with any claim to exercise that right in relation to a lease which has not been so granted.
Where a lease has been granted under section 56—
shall apply to any sub-lease directly or indirectly derived out of the lease; and
Where a lease has been granted under section 56, no long lease created immediately or derivatively by way of sub-demise under the lease shall confer on the sub-tenant, as against the tenant's landlord, any right under this Chapter to acquire a new lease (and for this purpose "long lease" shall be construed in accordance with section 7).
Any person who—
shall inform the other party that the sub-lease is to be derived out of a lease granted under section 56, unless either he knows that the other party is aware of it or he himself is unaware of it.
Where any lease contains a statement to the effect that it is a lease granted under section 56, the statement shall be conclusive for the purposes of subsections (2) to (4) in favour of any person who is not a party to the lease, unless the statement appears from the lease to be untrue.