| 2007 | 2006 | 2005 | ||||||||||||
| £m | £m | £m | ||||||||||||
| Profit attributable to equity holders of parent | 4,417 | 4,571 | 3,447 | |||||||||||
| Dilutive impact of convertible options | (25) | (30) | (38) | |||||||||||
| Profit attributable to equity holders of parent including dilutive impact of convertible options | 4,392 | 4,541 | 3,409 | |||||||||||
| 2007 | 2006 | 2005 | ||||||||||||
| million | million | million | ||||||||||||
| Basic weighted average number of shares in issue | 6,410 | 6,357 | 6,337 | |||||||||||
| Number of potential ordinary shares | 177 | 150 | 149 | |||||||||||
| Diluted weighted average number of shares | 6,587 | 6,507 | 6,486 | |||||||||||
| p | p | p | ||||||||||||
| Basic earnings per share | 68.9 | 71.9 | 54.4 | |||||||||||
| Diluted earnings per share | 66.7 | 69.8 | 52.6 | |||||||||||
The calculation of basic earnings per share is based on the profit attributable to equity holders of the parent and the number of basic weighted average number of shares excluding own shares held in employee benefits trusts and shares held for trading.
When calculating the diluted earnings per share, the profit attributable to equity holders of the parent is adjusted for the conversion of outstanding options into shares within Absa Group Limited and Barclays Global Investors UK Holdings Limited. The weighted average number of ordinary shares excluding own shares held in employee benefit trusts and shares held for trading, is adjusted for the effects of all dilutive potential ordinary shares, totalling 177 million (2006: 150 million, 2005: 149 million).
Of the total number of employee share options and share awards at 31st December 2007, none were anti-dilutive (2006: 5 million 2005: nil).
Subsequent to the balance sheet date, the Group continued to make on-market purchases of treasury shares under its various employee share schemes. No adjustment has been made to earnings per share in respect of these purchases.