Where the right to collective enfranchisement is exercised in relation to any premises to which this Chapter applies ("the relevant premises"), then, subject to and in accordance with this Chapter—
and any interest so acquired on behalf of those tenants shall be acquired in the manner mentioned in paragraphs (a) and (b) of section 1(1).
Paragraph (a) of subsection (1) above applies to the interest of the tenant under any lease which is superior to the lease held by a qualifying tenant of a flat contained in the relevant premises.
Paragraph (b) of subsection (1) above applies to the interest of the tenant under any lease (not falling within subsection (2) above) under which the demised premises consist of or include—
where the acquisition of that interest is reasonably necessary for the proper management or maintenance of those common parts, or (as the case may be) that property, on behalf of the tenants by whom the right to collective enfranchisement is exercised.
Where the demised premises under any lease falling within subsection (2) or (3) include any premises other than—
the obligation or (as the case may be) right under subsection (1) above to acquire the interest of the tenant under the lease shall not extend to his interest under the lease in any such other premises.
Where the qualifying tenant of a flat is a public sector landlord and the flat is let under a secure tenancy or an introductory tenancy or a secure contract (or an introductory standard contract), then if—
the interest of that public sector landlord as tenant under that lease shall not be liable to be acquired by virtue of subsection (1) to the extent that it is an interest in the flat or in any appurtenant property; and the interest of a public sector landlord as tenant under any lease out of which the qualifying tenant's lease is indirectly derived shall, to the like extent, not be liable to be so acquired (so long as the tenant under every lease intermediate between that lease and the qualifying tenant's lease is a public sector landlord).
The condition referred to in subsection (5)(a) is that either—
and in subsection (5) "appurtenant property" has the same meaning as in section 1.
In this section "the relevant premises" means any such premises as are referred to in subsection (1).