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Earnings per share (Tables)
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share
Basic and diluted earnings per share were calculated as follows:
First Quarter
In millions except share and per-share data20242023
Basic earnings:
Net income from continuing operations$2.8 $0.5 
Net (loss) / income from discontinued operations(0.1)— 
Net income$2.7 $0.5 
Weighted average number of £0.50 ordinary shares:
For basic earnings per share26,820,968 26,921,010 
Dilutive effect of potential common stock46,008 150,484 
For diluted earnings per share26,866,976 27,071,494 
Earnings / (loss) per share using weighted average number of ordinary shares outstanding(1):
Basic earnings per ordinary share for continuing operations$0.10 $0.02 
Basic (loss) / earnings per ordinary share for discontinued operations— — 
Basic earnings per ordinary share$0.10 $0.02 
Diluted earnings per ordinary share for continuing operations$0.10 $0.02 
Diluted (loss) / earnings per ordinary share for discontinued operations— — 
Diluted earnings per ordinary share$0.10 $0.02 
(1) The calculation of earnings per share is performed separately for continuing and discontinued operations. As a result, the sum of the two in any particular period may not equal the earnings-per-share amount in total