(1) On 1 July 2013 the Group started hedging the foreign exchange risk on a portion of contracted future US dollar revenues using the
Group's US dollar borrowings as the hedging instrument. From 1 November 2013, the hedging instrument was revised to also take into
account a portion of the Group's US dollar cash balances i.e. net borrowings. As a result, foreign exchange gains or losses arising on retranslation
of the Group's US dollar borrowings and a portion of the Group's US dollar cash balances are now initially recognized in
other comprehensive income, rather than being recognized in the income statement immediately. Amounts previously recognized in
other comprehensive income and accumulated in a hedging reserve are subsequently reclassified into the income statement in the
same accounting period, and within the same income statement line (i.e. Commercial revenue), as the underlying future US dollar revenues.