v3.25.4
Intangible assets - Additional information (Details) - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about intangible assets    
Period over which management has projected cash flows 5 years  
Impairment loss on goodwill £ 0 £ 0
Impairment of indefinite lived intangible assets £ 0 0
Increase in discount rate 1.50%  
Decrease in the compound annual growth rate for cash flow 2.00%  
Decrease in nominal long-term market growth rates 1.00%  
Increase in discount rate, part of combined scenario 1.00%  
Decrease in nominal long-term market growth rates, part of combined scenario 1.00%  
Impairment charge on intangible assets due to reasonably possible change in assumptions £ 0  
Internally developed intangible assets | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 3 years  
Internally developed intangible assets | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 10 years  
Market related | Not internally generated | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 1 year  
Market related | Not internally generated | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 40 years  
Customer related | Not internally generated | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 1 year  
Customer related | Not internally generated | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 20 years  
Editorial content | Not internally generated | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 1 year  
Editorial content | Not internally generated | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 40 years  
Software and technology | Not internally generated | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 1 year  
Software and technology | Not internally generated | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 10 years  
Other | Not internally generated | Minimum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 3 years  
Other | Not internally generated | Maximum    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 20 years  
Platforms and infrastructure | Legal    
Disclosure of detailed information about intangible assets    
Finite-lived intangible assets, useful life 10 years  
Capitalised development costs £ 663 645
Journal titles | Scientific, Technical & Medical    
Disclosure of detailed information about intangible assets    
Intangible assets with indefinite useful life £ 113 £ 121