v3.25.4
Subordinated liabilities - Preference Shares (Details)
£ / shares in Units, £ in Millions
Dec. 31, 2025
GBP (£)
£ / shares
shares
Dec. 31, 2025
$ / shares
Dec. 31, 2024
GBP (£)
shares
Dec. 31, 2023
GBP (£)
shares
Preference Shares [Line Items]        
Shares outstanding (in number of shares) | shares 59,181,971,051      
Share capital | £ £ 5,889   £ 6,062  
Preference shares £m        
Preference Shares [Line Items]        
Shares outstanding (in number of shares) | shares 296,227,449   296,227,449 343,501,265
Share capital | £ £ 74   £ 74 £ 86
% of share capital 0.50%   0.49% 0.54%
Preference shares £m | 6% Non-cumulative Redeemable Preference shares of GBP0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 6.00%      
Shares outstanding (in number of shares) | shares 400   400 400
Share capital | £ £ 0   £ 0 £ 0
Par value per share (in GBP per share) | £ / shares £ 0.25      
% of share capital 0.00%   0.00% 0.00%
Preference shares £m | 6.475% Non-cumulative Preference shares of GBP0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 6.475%      
Shares outstanding (in number of shares) | shares 0   0 47,273,816
Share capital | £ £ 0   £ 0 £ 12
Par value per share (in GBP per share) | £ / shares £ 0.25      
% of share capital 0.00%   0.00% 0.07%
Preference shares £m | 9.25% Non-cumulative Irredeemable Preference shares of GBP0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 9.25%      
Shares outstanding (in number of shares) | shares 252,510,147   252,510,147 252,510,147
Share capital | £ £ 63   £ 63 £ 63
Par value per share (in GBP per share) | £ / shares £ 0.25      
% of share capital 0.43%   0.42% 0.40%
Preference shares £m | 9.75% Non-cumulative Irredeemable Preference shares of GBP0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 9.75%      
Shares outstanding (in number of shares) | shares 43,630,285   43,630,285 43,630,285
Share capital | £ £ 11   £ 11 £ 11
Par value per share (in GBP per share) | £ / shares £ 0.25      
% of share capital 0.07%   0.07% 0.07%
Preference shares £m | 6.413% Non-cumulative Fixed/Floating Rate Callable Preference shares of USD0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 6.413%      
Shares outstanding (in number of shares) | shares 48,990   48,990 48,990
Share capital | £ £ 0   £ 0 £ 0
Par value per share (in GBP per share) | $ / shares   $ 0.25    
% of share capital 0.00%   0.00% 0.00%
Preference shares £m | 6.657% Non-cumulative Fixed/Floating Rate Callable Preference shares of USD0.25        
Preference Shares [Line Items]        
Borrowings, interest rate (in percent) 6.657%      
Shares outstanding (in number of shares) | shares 37,627   37,627 37,627
Share capital | £ £ 0   £ 0 £ 0
Par value per share (in GBP per share) | $ / shares   $ 0.25    
% of share capital 0.00%   0.00% 0.00%