What does the key case of Belmont Park Investments Pty Ltd v BNY Corporate Trustee Services Ltd establish?

The principle has two key aspects, of which the Supreme Court of the United Kingdom ruled that only the first was relevant on the facts of the case: 1 The anti-deprivation rule, which is aimed at attempts to withdraw an asset on bankruptcy or liquidation or administration, thereby reducing the value of the insolvent estate to the detriment of creditors. 2 The pari passu rule, which reflects the principle that statutory provisions for pro rata distribution may not be excluded by a contract which gives one creditor more than its proper share