In this Part -

"building society" means a building society to which an authorisation has been granted or deemed to be granted under the Building Societies Act 1989;

"security" includes a mortgage (whether legal or equitable), charge, debenture, bill of exchange, promissory note, guarantee, lien, pledge or other means of securing the payment of a debt whether present or future, or the discharge of an obligation or liability whether actual or contingent;

"the transferor", "the transferee" and "the transfer date" have the meanings assigned to them by section 33 of this Act.