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Earnings per share (Tables)
 6 Months Ended
Jun. 30, 2023
Earnings per share [abstract]  
Calculation of basic and diluted EPS
Basic EPS
The calculation of basic EPS is as follows:
Six Months Ended 30 June 2023
Six Months Ended 30 June 2022
Earnings1 (£ million)
112.0 257.9 
Weighted average shares used in basic EPS calculation (million)1,071.2 1,115.2 
EPS10.5p23.1p
Note
1Earnings is equivalent to profit for the period attributable to equity holders of the parent.
Diluted EPS
The calculation of diluted EPS is as follows:
Six Months Ended 30 June 2023
Six Months Ended 30 June 2022
Diluted earnings1 (£ million)
112.0 257.9 
Weighted average shares used in diluted EPS calculation (million)1,090.8 1,137.8 
Diluted EPS10.3p22.7p
Note
1Diluted earnings is equivalent to profit for the period attributable to equity holders of the parent.
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:
Six Months Ended 30 June 2023
Six Months Ended 30 June 2022
mm
Weighted average shares used in basic EPS calculation1,071.2 1,115.2 
Dilutive share options outstanding0.8 1.4 
Other potentially issuable shares18.8 21.2 
Weighted average shares used in diluted EPS calculation1,090.8 1,137.8