This excerpt taken from the CPRT 8-K filed Apr 23, 2007.
The Group operates defined contribution pension schemes for certain Directors and employees. Contributions are charged to the Group profit and loss account as they become payable in accordance with the rules of the schemes. Differences between contributions payable in the year and contributions actually paid are shown as either accruals or prepayments in the balance sheet. The assets of the schemes are held separately from those of the Group in independently administered funds.