Loans from related parties - Current loans and borrowings (Details) - GBP (£) £ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Loans from related parties
Loans from related parties	£ 188,526	£ 524,242

The amounts payable resulting from related party transactions. [Refer: Total for all related parties [member]]

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant