Succession Act 1981

Where a person dies possessed of, or entitled to, or under a general power of appointment by will disposes of, an interest in property, which at the time of his or her death is charged with the payment of any debt, whether by way of mortgage, charge or otherwise, legal or equitable (including a lien for unpaid purchase money), and the deceased has not by will signified a contrary or other intention, the interest so charged shall, as between the different persons claiming through the deceased, be primarily liable for the payment of the debt; and every part of the said interest, according to its value, shall bear a proportionate part of the charge of the whole thereof.

A contrary or other intention is not signified by a general direction, charge or trust for the payment of debts or of all the debts of the testator out of the testator’s estate or out of the testator’s residuary estate or by a gift of any such estate after or subject to the payment of debts.