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Share capital and other equity - Cumulative preference shares (Details)
Dec. 15, 2021
GBP (£)
shares
11% Cumulative Preference Shares  
Number of own shares purchased | shares 259,314
Dividend rate 11.00%
Nominal value £ 259,314
Percentage Of Preferred Stock Shares Purchased 51.86%
Preferred Stock Shares Purchase Price Percentage 155.00%
Total consideration £ 401,937
5 1/2% Cumulative Preference Shares  
Number of own shares purchased | shares 157,546
Dividend rate 5.50%
Nominal value £ 157,546
Percentage Of Preferred Stock Shares Purchased 39.39%
Preferred Stock Shares Purchase Price Percentage 102.00%
Total consideration £ 160,697