Mr Macfarlan QC, who appeared for the appellants, submitted that by cl12 of
the Guarantee the Guarantors agreed that upon default in payment of the debt by
the Borrowers and the identification by the Lender of assets of the Guarantors to
which the Lender elected to attach the debt, the assets of the Guarantors so
identified would be subject to a charge in favour of the Lender to secure
performance of the obligations of the Guarantors to the Lender under the
Guarantee. It was argued that an agreement to charge ascertainable property
creates a binding charge as soon as the property is ascertained; Halsbury 4th ed
vol 32 para528; Meagher Gummow and Lehane 2nd para652. Mr Hutley, who
appeared for the respondent, referred to the principle succinctly stated in Ankar
Pty Ltd v National Westminister Finance (Australia) Ltd (1987) 162 CLR 549 at
561. "At law, as in equity, the traditional view is that the liability of the surety is
strictissimi juris and that ambiguous contractual provisions should be construed
in favour of the surety". He submitted that there was no operative provision in the
Deed of Guarantee which purported to effect an alteration of interests in real
property. The conferring of liberty on the Lender to "attach" the debt to assets,
whatever that was intended to effect, involved no act by the Guarantors creating
or granting or agreeing to create or grant a charge on the assets in favour of the
Lender.