iii. the third concerns the documentary evidence which demonstrates that Ms Shields was intimately involved in Mr Ollis' financial affairs, which involvement included preparation of records for Mr Ollis' tax returns, communications with Mr Ollis' accountant and the Australian Taxation Office, dealing with the demands of Mr Ollis' many creditors, the preparation of bank statement reconciliations, and similar. Hence the general evidence before the Court permits a finding that it is inconceivable that Mr Ollis did not share with Ms Shields the source of his new-found fortune. The resultant finding is that the overwhelming probabilities are that Mr Ollis told Ms Shields exactly from where and how where he was obtaining the funds.
23 There is little doubt but that the retention of moneys after a recipient has learned of a mistake made by the payer may in particular circumstances, be a matter of signal significance.
24 Differing views have been expressed in relation to this matter. Chase Manhattan Bank NA v Israel-British Bank (London) Ltd [1979] 3 All ER 1025 concerned an attempt by Goulding J to fit a case of mistaken overpayment by one banker to another as a result of clerical error into the category concerning pre-existing fiduciary obligations. As observed by RP Meagher, JD Heydon and MJ Leeming, Meagher, Gummow and Lehane's Equity Doctrines and Remedies, 4th ed, Butterworths, 2002, at [14,010], Goulding J held that the conscience of the insolvent recipient became subjected to a fiduciary duty to respect a proprietary interest in the money which was "retained" by the mistaken payer. In Westdeutsche, Lord Browne-Wilkinson [who did not accept the reasoning of Goulding J in Chase Manhattan] expressed the view that Chase Manhattan may nonetheless have been rightly decided. His Lordship [albeit obiter] observed at 714-715 that although the mere receipt of the moneys in ignorance of a mistake gave rise to no trust, the retention of the moneys after the recipient had learned of the mistake may well have given rise to a constructive trust: in turn citing Snell's Equity (29th ed, 1991) p193, Pettit Equity and the Law of Trusts (7th ed, 1993) p168 and Metall und Rohstoff AG v Donaldson Lufkin & Jenrette Inc [1989] 3 All ER 14 at 52-53. The appropriate question was said to be whether the payee had such knowledge of the material mistake as to affect his conscience.
25 The authors of Meagher, Gummow and Lehane's Equity Doctrines and Remedies (4th ed) have commented that this reasoning is unconvincing. In Cashflow Finance (at [478]) I observed that the decision in Chase Manhattan had in effect been overruled by the House of Lords in Westdeutsche and that Lord Browne-Wilkinson had authoritatively rejected the proposition that, without more, receipt of money paid under mistake, renders the recipient a trustee and leaves the payee holding an equitable proprietary right in the money [emphasis added]. This is also the view of the leading Australian texts Meagher, Gummow and Lehane's Equity Doctrines and Remedies (4th ed) and JD Heydon and MJ Leeming, Jacobs' Law of Trusts in Australia (7th ed, 2006) at [2703]. However the present is a case in which the phrase 'without more' becomes of particular significance.
26 In truth it is trite that a bank is usually free to treat a cheque presentation as an implied request for an overdraft so that, if accepted by the bank upon honouring the cheque, the amount will be recoverable from the customer. This proposition generally holds true even where the cheque has been honoured by the bank albeit that it suffered under a relevant mistake in that regard. In the usual commercial circumstance which would there obtain, the proceeds of the cheque is the property of the customer. As will be seen from the reasons which follow, the present case falls well outside any semblance of a 'usual commercial circumstance', presenting as it does the undeniable face of the commission of a clear fraud.
Dealing with the issue
27 It is of signal importance to note that the essential banker-customer relationship set up as between the Bank and Mr Ollis involved the setting up initially of the Personal Account and subsequently of the Business Account to be operated [by later arrangement] with the ATR facility. There were no overdraft facilities sought. There was no security sought by the Bank nor offered by the customer. Mr Ollis well knew that the Bank was only prepared to contract with him on the basis that the two accounts would be regulated by the ATR facility. These parameters fairly describe what may be termed as 'the essence' of the contractual arrangement entered into by the parties.
28 The significance of whether the mistake is fundamental was pointed up by Brennan J [as his Honour then was] in Ilich v R (1987) 162 CLR 110 at 138-139: