XML 295 R85.htm IDEA: XBRL DOCUMENT v3.25.0.1
Operating expenses - Share-based payments (Details)
£ / shares in Units, £ in Millions, shares in Millions, Option in Millions, EquityInstruments in Millions
 12 Months Ended
Dec. 31, 2024
GBP (£)
EquityInstruments
Option
shares
£ / shares
Dec. 31, 2023
GBP (£)
EquityInstruments
Option
£ / shares
Dec. 31, 2022
GBP (£)
Option
EquityInstruments
£ / shares
Shares awarded      
Share-based payments, market price measurement period preceding grant date 5 days    
Minimum      
Value at grant      
Long - term incentives vest 3 years    
Maximum      
Value at grant      
Long - term incentives vest 7 years    
Shares awarded      
Share-based payments, volatility measurement period 5 years    
Sharesave      
Average exercise price      
At 1 January | £ / shares £ 1.59 £ 1.63 £ 1.61
Granted | £ / shares 2.94 1.42 1.86
Exercised | £ / shares 1.52 1.44 1.88
Cancelled | £ / shares 1.6 1.72 1.6
At 31 December | £ / shares £ 1.93 £ 1.59 £ 1.63
Shares under option      
At 1 January | Option 114.0 99.0 95.0
Granted | Option 24.0 43.0 25.0
Exercised | Option (32.0) (23.0) (15.0)
Cancelled | Option (5.0) (5.0) (6.0)
At 31 December | Option 101.0 114.0 99.0
Options exercisable, vesting period 6 months    
Options exercisable | Option 8.9 19.0 5.1
Weighted average share price | £ / shares £ 4.03 £ 2.2 £ 2.59
Weighted average remaining contractual life of outstanding share options 2 years 4 months 6 days 2 years 3 months 2 years
Fair value of of options granted during the period £ 28.3 £ 27.3 £ 22.1
Shares awarded      
Share-based payments, market price measurement period preceding grant date 3 days    
Sharesave | Minimum      
Shares under option      
Exercise price of outstanding share options | £ / shares £ 1.42 £ 1.12 £ 1.12
Sharesave | Maximum      
Shares under option      
Exercise price of outstanding share options | £ / shares £ 2.94 £ 1.89 £ 2.27
Deferred performance awards      
Shares under option      
Options exercisable, vesting period 3 years    
Value at grant      
At 1 January £ 76.0 £ 93.0 £ 132.0
Granted 50.0 52.0 46.0
Forfeited (3.0) (2.0) (4.0)
Vested (57.0) (67.0) (81.0)
At 31 December £ 66.0 £ 76.0 £ 93.0
Shares awarded      
At 1 January (in shares) | EquityInstruments 35 46 65
Granted (in shares) | EquityInstruments 23 20 20
Forfeited (in shares) | EquityInstruments (1) (1) (2)
Vested/exercised (in shares) | EquityInstruments (27) (30) (37)
At 31 December (in shares) | EquityInstruments 30 35 46
Long-term incentives      
Value at grant      
At 1 January £ 49.0 £ 49.0 £ 44.0
Granted 9.0 11.0 16.0
Vested (11.0) (10.0) (10.0)
Lapsed (7.0) (1.0) (1.0)
At 31 December £ 40.0 £ 49.0 £ 49.0
Shares awarded      
At 1 January (in shares) | EquityInstruments 23 23 21
Granted (in shares) | EquityInstruments 5 5 7
Vested/exercised (in shares) | EquityInstruments (5) (4) (4)
Lapsed (in shares) | EquityInstruments (4) (1) (1)
At 31 December (in shares) | EquityInstruments 19 23 23
Market value of awards vested and exercised £ 19.3 £ 9.5 £ 11.7
Sharing in Success      
Share-based payments      
Total granted (in shares) | shares 16    
Value at grant      
Granted £ 49.0    
Vested £ (49.0)    
Shares awarded      
Vested/exercised (in shares) | shares (16)