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Intangible assets - Additional information (Details) - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about intangible assets    
Period over which management has projected cash flows 5 years  
Cumulative amortisation of goodwill recorded before adoption of IFRS £ 1,199 £ 1,253
Cumulative impairment of goodwill recorded after adoption of IFRS 9 9
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 £ 636 735
Journal titles | Scientific, technical & medical    
Disclosure of detailed information about intangible assets    
Intangible assets with indefinite useful life £ 119 £ 125