Currency risk
The Group faces currency risk principally on its net assets, most of which are in currencies other than sterling. The Group aims to reduce the impact that retranslation of these assets might have on the balance sheet by matching the currency of its borrowings, where possible, with the currency of its assets. The majority of the Group’s borrowings are held in US dollars, euros and Australian dollars, in order to provide a hedge against these currency net assets.
The Group manages its currency flows to minimise currency transaction exchange risk. Forward contracts and other derivative financial instruments are used to hedge significant individual transactions. The majority of such currency flows within the Group relate to repatriation of profits and intra-Group loan repayments. The Group’s foreign exchange cover is executed primarily in the UK.
The Group does not trade in financial instruments, nor does it engage in speculative derivative transactions.
Interest rate risk
Interest rate risk is managed by mixing fixed and floating rate borrowings depending upon the purpose and term of the financing. As at 31 December 2011, virtually all the Group’s third-party borrowings bore interest at floating rates.
Credit risk
The Group’s principal financial assets are trade and other receivables, bank and cash balances and a limited number of investments and derivatives held to hedge certain of the Group’s liabilities. These represent the Group’s maximum exposure to credit risk in relation to financial assets.
The Group has stringent procedures to manage counterparty risk and the assessment of customer credit risk is embedded in the contract tendering processes. Customer credit risk is mitigated by the Group’s relatively small average contract size, its diversity, both geographically and in terms of end markets, and by taking out credit insurance in many of the countries in which the Group operates. No individual customer represented more than 5% of revenue in 2011.
The counterparty risk on bank and cash balances is managed by limiting the aggregate amount of exposure to any one institution by reference to their credit rating and by regular reviews of these ratings.