v3.26.3
Financial risk management - Credit risk (Details) - GBP (£)
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disclosure of gross trade receivables by due date and impairment    
Number of days for payment that specific agreements may go beyond 30 days  
Trade receivables £ 132,197,000 £ 177,147,000
Transfer fees receivable £ 67,935,000 102,614,000
Percentage of provision for trade receivables that are past due and impaired 100.00%  
Minimum    
Disclosure of gross trade receivables by due date and impairment    
Credit term for other sales 14 days  
Maximum    
Disclosure of gross trade receivables by due date and impairment    
Credit term for other sales 30 days  
Cost / gross value    
Disclosure of gross trade receivables by due date and impairment    
Trade receivables £ 137,590,000 197,532,000
Trade receivables | Cost / gross value    
Disclosure of gross trade receivables by due date and impairment    
Financial assets 137,590,000 197,532,000
Trade receivables | Cost / gross value | Not impaired | Not past due    
Disclosure of gross trade receivables by due date and impairment    
Financial assets 123,334,000 157,747,000
Trade receivables | Cost / gross value | Not impaired | Past due    
Disclosure of gross trade receivables by due date and impairment    
Financial assets 8,863,000 19,400,000
Trade receivables | Cost / gross value | Impaired | Not past due    
Disclosure of gross trade receivables by due date and impairment    
Financial assets 325,000  
Trade receivables | Cost / gross value | Impaired | Past due    
Disclosure of gross trade receivables by due date and impairment    
Financial assets £ 5,068,000 £ 20,385,000