The right to buy cannot be exercised if the tenant is subject to an order of the court for possession of the dwelling-house.
The right to buy cannot be exercised if the person, or one of the persons, to whom the right to buy belongs—
has made a bankruptcy application that has not been determined or has a bankruptcy petition pending against him,
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
is an undischarged bankrupt, ...
has made a composition or arrangement with his creditors the terms of which remain to be fulfilled. or
The right to buy cannot be exercised at any time during the suspension period under an order made under section 121A in respect of the secure tenancy.