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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2019
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Calculation of Basic and Diluted EPS | Basic EPS The calculation of basic EPS is as follows:
Continuing operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Earnings 1 (£ million) |  |  | 627.9 |  |  |  | 936.5 |  |  |  | 1,579.5 |
Weighted average shares used in basic EPS calculation (million) |  |  | 1,250.0 |  |  |  | 1,247.8 |  |  |  | 1,261.1 |
EPS |  |  | 50.2p |  |  |  | 75.1p |  |  |  | 125.2p |
Discontinued operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Earnings 1 (£ million) |  |  | (3.8 | ) |  |  | 126.4 |  |  |  | 237.1 |
Weighted average shares used in basic EPS calculation (million) |  |  | 1,250.0 |  |  |  | 1,247.8 |  |  |  | 1,261.1 |
EPS |  |  | (0.3p | ) |  |  | 10.1p |  |  |  | 18.8p |
Continued and discontinued operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Earnings 1 (£ million) |  |  | 624.1 |  |  |  | 1,062.9 |  |  |  | 1,816.6 |
Weighted average shares used in basic EPS calculation (million) |  |  | 1,250.0 |  |  |  | 1,247.8 |  |  |  | 1,261.1 |
EPS |  |  | 49.9p |  |  |  | 85.2p |  |  |  | 144.0p |
Note
1 |  | Earnings is equivalent to profit for the year attributable to equity holders of the parent.
Diluted EPS The calculation of diluted reported and diluted EPS is as follows:
Continuing operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Diluted earnings (£ million) |  |  | 627.9 |  |  |  | 936.5 |  |  |  | 1,579.5 |
Weighted average shares used in diluted EPS calculation (million) |  |  | 1,260.6 |  |  |  | 1,261.2 |  |  |  | 1,275.8 |
Diluted EPS |  |  | 49.8p |  |  |  | 74.3p |  |  |  | 123.8p |
Discontinued operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Diluted earnings (£ million) |  |  | (3.8 | ) |  |  | 126.4 |  |  |  | 237.1 |
Weighted average shares used in diluted EPS calculation (million) |  |  | 1,260.6 |  |  |  | 1,261.2 |  |  |  | 1,275.8 |
Diluted EPS |  |  | (0.3p | ) |  |  | 10.0p |  |  |  | 18.6p |
Continued and discontinued operations |  | 2019 |  |  | 2018 |  |  | 2017 |
Diluted earnings (£ million) |  |  | 624.1 |  |  |  | 1,062.9 |  |  |  | 1,816.6 |
Weighted average shares used in diluted EPS calculation (million) |  |  | 1,260.6 |  |  |  | 1,261.2 |  |  |  | 1,275.8 |
Diluted EPS |  |  | 49.5p |  |  |  | 84.3p |  |  |  | 142.4p |
Reconciliation Between Shares Used in Calculating Basic and Diluted EPS | A reconciliation between the shares used in calculating basic and diluted EPS is as follows:
|  | 2019 m |  |  | 2018 m |  |  | 2017 m |
Average shares used in basic EPS calculation |  |  | 1,250.0 |  |  |  | 1,247.8 |  |  |  | 1,261.1 |
Dilutive share options outstanding |  |  | 0.3 |  |  |  | 1.6 |  |  |  | 1.8 |
Other potentially issuable shares |  |  | 10.3 |  |  |  | 11.8 |  |  |  | 12.9 |
Shares used in diluted EPS calculation |  |  | 1,260.6 |  |  |  | 1,261.2 |  |  |  | 1,275.8 |

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