Investments in subsidiaries are measured at cost less accumlulated impairment.
Investments in unlisted Company shares, whose market value can be reliably determined, are remeasured to market value at each balance sheet date. Gains and losses on remeasurment are recognised in the statement of comprehensive income for the period. Where market value cannot be reliably determined, such investments are stated at historic cost less impairment.
Investments in listed company shares are remeasured to market value at each balance sheet date. Gains and losses on remeasurement are recognised in profit and loss for the period.