v3.26.1
Intangible assets (Details) - GBP (£)
£ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]      
Balance at beginning £ 5,646 £ 2,941  
Balance at end 5,645 5,646 £ 2,941
Net book value 5,645 5,646 2,941
Gross Carrying Amount [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 21,402 18,717 15,779
Acquisition 2,707 2,938
Disposal (19) (22)  
Balance at end 21,383 21,402 18,717
Net book value 21,383 21,402 18,717
Accumulated depreciation, amortisation and impairment [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 15,756 15,776 15,773
Amortisation charge for the year 1 2 3
Disposal (19) (22)
Balance at end 15,738 15,756 15,776
Intangible assets under development [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 5,645 2,938  
Balance at end 5,645 5,645 2,938
Net book value 5,645 5,645 2,938
Intangible assets under development [member] | Gross Carrying Amount [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 19,023 16,316 13,378
Acquisition 2,707 2,938
Disposal  
Balance at end 19,023 19,023 16,316
Net book value 19,023 19,023 16,316
Intangible assets under development [member] | Accumulated depreciation, amortisation and impairment [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 13,378 13,378 13,378
Amortisation charge for the year
Disposal
Balance at end 13,378 13,378 13,378
Goodwill [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning  
Balance at end
Net book value
Goodwill [member] | Gross Carrying Amount [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 2,291 2,291 2,291
Acquisition  
Disposal  
Balance at end 2,291 2,291 2,291
Net book value 2,291 2,291 2,291
Goodwill [member] | Accumulated depreciation, amortisation and impairment [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 2,291 2,291 2,291
Amortisation charge for the year
Disposal
Balance at end 2,291 2,291 2,291
IT and website costs [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 1 3  
Balance at end 1 3
Net book value 1 3
IT and website costs [member] | Gross Carrying Amount [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 88 110 110
Acquisition
Disposal (19) (22)  
Balance at end 69 88 110
Net book value 69 88 110
IT and website costs [member] | Accumulated depreciation, amortisation and impairment [member]      
IfrsStatementLineItems [Line Items]      
Balance at beginning 87 107 104
Amortisation charge for the year 1 2 3
Disposal (19) (22)
Balance at end £ 69 £ 87 £ 107