13 Earnings per share.

Earnings per share have been calculated using the weighted average number of ordinary shares in issue and the profits/(losses) for the financial year. Reconciliations of the earnings and weighted average numbers of shares used in the calculations are set out below:

Based on profit/(loss) attributable to equity holders

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	Profit after tax 2009 £m	Number of shares1 2009 m	Earnings per share 2009 p	Loss after tax 2008 £m	Number of shares1 2008 m	Earnings per share 2008 p
1. Weighted average number of shares. 2. At 31 December 2008, net shares under options allocable for no further consideration were anti-dilutive and were therefore excluded from the diluted earnings per share calculation.
Profit/(loss) attributable to equity holders of the Company	863	5,824	14.82	(1,067)	5,968	(17.88)
Net shares under options allocable for no further consideration2	–	33	(0.09)	–	22	–
Diluted earnings per share	863	5,857	14.73	(1,067)	5,990	(17.88)