10. Earnings per share

Earnings per share is calculated as follows:

	2022 £000	2021 £000
Earnings for the purposes of basic earnings per share being net profit attributable to equity holders of the parent Company	15,601	17,304
Earnings for the purposes of underlying basic earnings per share being underlying net profit attributable to equity holders of the parent Company	22,303	19,757

	Number	Number
Number of shares
Weighted average number of ordinary shares for the purposes of basic earnings per share	308,834,123	307,337,645
Effect of dilutive potential ordinary shares	1,335,323	112
Weighted average number of ordinary shares for the purposes of diluted earnings per share	310,169,446	307,337,757
Basic earnings per share	5.05p	5.63p
Underlying basic earnings per share	7.22p	6.43p
Diluted earnings per share	5.03p	5.63p
Underlying diluted earnings per share	7.19p	6.43p

Reconciliation of earnings	2022 £000	2021 £000
Net profit attributable to equity holders of the parent Company	15,601	17,304
Non-underlying items	6,702	2,453
Underlying net profit attributable to equity holders of the parent Company	22,303	19,757

Further details of non-underlying items are provided in note 5.