[F1(1)Where a registered leasehold estate—
(a)is, under any statutory provision, converted into an estate in fee simple, whether or not subject to a fee farm rent; or
(b)becomes merged in the freehold or in a superior leasehold estate; or
(c)has otherwise been extinguished,
the Registrar shall, on application in such manner and subject to such conditions as may be prescribed, and on production of such evidence of the title as the Registrar considers necessary,—
(i)cancel the entry in the title register relating to the estate which has been so converted, merged or extinguished; and
(ii)if a superior title has been acquired in circumstances where this subsection applies but has not been registered, register that title in the title register with such class of title as appears to the Registrar to be appropriate; and
(iii)when a superior title is registered, make such alterations in any entry relating to the land in question in the title register as appear to the Registrar to be appropriate.]
(2)Until the entry in the[F1 title register] has been cancelled pursuant to[F1 subsection (1)(i)] and, where necessary, until the superior title has been registered pursuant to[F1 subsection (1)(ii)], the owner of the superior estate shall not, under the provisions of this Act, have any further or other title to the land than he would have had if the leasehold estate had not been converted or, as the case may be, merged or extinguished.