v3.26.3
Financial risk management - Movements on provision for impairment (Details) - Trade receivables - Accumulated impairment - GBP (£)
£ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Movements on the provision for impairment of trade receivables    
Provision at beginning of year £ 20,385 £ 10,985
Increase in provision recognized in profit or loss during the year 1,711 519
Unused amount reversed - cash received (2,829) (81)
Receivables written off during the year as uncollectible (13,874) (584)
Receivables offset against contract liabilities - deferred revenue   9,546
Provision at end of year £ 5,393 £ 20,385