No assignment or
underletting —
(a) by
the official assignee of a bankrupt;
(b) by
the liquidator of a company (except in the case of a member’s voluntary
winding up);
(c) by
the sheriff or bailiff under an execution; or
(d) by a
personal representative pursuant to a bequest in a will,
shall be deemed a
breach of a covenant, condition or agreement against assigning, underletting,
parting with possession or disposing of the land leased unless the contrary is
expressly declared in the lease.