v3.26.1
Share capital (Details 2) - GBP (£)
£ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Ordinary shares [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance, shares 6,685,918,922 1,189,577,722 5,417,137
Beginning balance, amount £ 6,685 £ 1,189 £ 5
Private Placements [1]     98,387,275
Consideration for Private Placements [1]     £ 98
Registered Direct Offering   2,129,516,800 276,697,310 [1]
Consideration for Registered Direct Offering   £ 2,130 £ 277 [1]
Shares issued on purchase Intangible asset   151,265,200 323,684,800
Consideration for Shares issued on purchase Intangible asset   £ 151 £ 324
Registered Offering 157,639,100,000   485,391,200
Consideration for Registered Offering £ 157,639   £ 485
Ending balance, shares 225,817,808,922 6,685,918,922 1,189,577,722
Warrant inducement 2,004,330,000 1,614,435,600  
Consideration for shares issued on warrant inducement £ 2,004 £ 1,614  
Exercise pre-funded warrants   1,502,426,000  
Consideration exercise pre-funded warrants   £ 1,502  
Exercise Series E & Series F warrants   98,697,600  
Consideration exercise series E & series F warrants   £ 99  
Shares issued under ELOC 59,488,460,000    
Consideration for Shares issued under ELOC £ 59,488    
‘A’ deferred shares [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance, shares 1,000,001   1,000,001
Private Placements [1]    
Registered Direct Offering   [1]
Share sub-division and re-designation  
Shares issued on purchase Intangible asset  
Registered Offering    
Ending balance, shares 1,000,001 1,000,001  
Warrant inducement    
Exercise pre-funded warrants    
Exercise Series E & Series F warrants    
‘B’ deferred shares [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance, shares 4,063,321,418 4,063,321,418  
Private Placements [1]    
Registered Direct Offering   [1]
Share sub-division and re-designation   4,063,321,418
Shares issued on purchase Intangible asset  
Registered Offering    
Ending balance, shares 4,063,321,418 4,063,321,418 4,063,321,418
Warrant inducement    
Exercise pre-funded warrants    
Exercise Series E & Series F warrants    
‘C’ deferred shares [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance, shares 126,547,389,518    
Private Placements [1]    
Registered Direct Offering   [1]
Share sub-division and re-designation   126,547,389,518
Shares issued on purchase Intangible asset  
Registered Offering    
Ending balance, shares 126,547,389,518 126,547,389,518  
Warrant inducement    
Exercise pre-funded warrants    
Exercise Series E & Series F warrants    
‘D’ deferred shares [Member]      
IfrsStatementLineItems [Line Items]      
Private Placements [1]    
Registered Direct Offering   [1]
Share sub-division and re-designation 2,482,747,137,178
Shares issued on purchase Intangible asset  
Registered Offering    
Ending balance, shares 2,482,747,137,178    
Warrant inducement    
Exercise pre-funded warrants    
Exercise Series E & Series F warrants    
[1] Number of shares issued includes exercise of pre-funded warrants and Series A, Series B and Series C warrants that were exercisable on an ‘alternative cashless basis’.