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Annual Report & Accounts 2009 - Notes
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55 20.6 Options granted before 1 January 2007 - Black-Scholes valuation method The fair value of services received in return for share options granted prior to 2007 were measured by reference to the fair value of share options granted. The estimate of the fair value of the services received is measured on a Black-Scholes valuation model. The contractual life of the option (10 years) is used as an input into this model. Expectations of early exercise are incorporated into the Black- Scholes model. The option exercise price for individuals who were employed at 21 December 2004 was the market price on admission to AIM of £4.20 and for all other individuals was a range of prices, not being lower than the mid-market price of the shares on the three days immediately before the grant date. Share price at date Exercise Expected Fair value at of grant* price Expected Exercise dividend Risk free measure- Date of grant (in £) (in £) volatility multiple yield rate** ment date 21 Dec 04 £4.20 £4.20 45% 4.8 4% 4.51% £1.33 28 Sep 05 £5.50 £5.50 45% 4.8 5% 4.22% £1.58 28 Sep 05 £5.50 £4.20 45% 4.8 5% 4.22% £1.95 23 Jan 06 £3.89 £3.59 45% 4.8 8% 4.16% £0.94 23 Jan 06 £3.89 £2.98 45% 4.8 8% 4.16% £1.10 16 May 06 £3.83 £4.20 65% 4.8 8% 4.70% £1.23 The expected volatility is based on the historic volatility (calculated based on the weighted average remaining life of the share options), adjusted for any expected changes to future volatility due to publicly available information. There are no market conditions associated with the share option grants. 21. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT The Group's principal financial instruments as at 31 December 2009 comprise cash and cash equivalents. The main purpose of these financial instruments is to finance the Group's operations. The Group has other financial instruments which mainly comprise receivables and payables, which arise directly from its operations. Cash and cash equivalents and trade and other receivables have been classified as loans and receivables and trade and other payables, and deferred consideration as financial liabilities measured at amortised cost. During the year, the Group did not use derivative financial instruments to hedge its exposure to foreign exchange or interest rate risks arising from operational, financing and investment activities. The Group does not hold or issue derivative financial instruments for trading purposes. 21.1 Market risk Market risk is the risk that changes in market prices, such as foreign exchange rates and interest rates will affect the Group's income or value of its holdings of financial instruments. Exposure to market risk (which includes currency and interest rate risk) arises in the normal course of the Group's business. 21.2 Foreign exchange risk Foreign exchange risk arises from transactions, recognised assets and liabilities and net investments in foreign operations. The Group does not use foreign exchange contracts to hedge its currency risk. The Group dividend is declared in the Euro as a Luxembourg company. Two weeks before the dividend is due to be paid, the Company sells Euro and buys British Pounds for an amount equal to the dividend net of withholding tax.