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Warrants - Warrants recognized within equity (Details) - GBP (£)
£ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Warrants    
Warrant reserve £ 36,693 £ 13,475
Warrants recognized within equity    
Warrants    
Warrants and options in issue but not exercised 69,625,000 54,625,000
Warrant reserve £ 36,693 £ 13,475
Tranche A Warrant    
Warrants    
Warrants and options in issue but not exercised 7,500,000  
Warrant reserve £ 9,006  
Tranche B Warrant    
Warrants    
Warrants and options in issue but not exercised 7,500,000  
Warrant reserve £ 14,212  
SF Warrants    
Warrants    
Warrants and options in issue but not exercised 50,000,000 50,000,000
Warrant reserve £ 3,907 £ 3,907
Virgin Atlantic Warrants    
Warrants    
Warrants and options in issue but not exercised 2,625,000 2,625,000
Warrant reserve £ 8,558 £ 8,558
MWC Option    
Warrants    
Warrants and options in issue but not exercised 2,000,000 2,000,000
Warrant reserve £ 1,010 £ 1,010