v3.26.1
Share-Based Payment Arrangements - Narrative (Details)
£ in Thousands
6 Months Ended
Dec. 31, 2025
GBP (£)
shares
Dec. 31, 2024
GBP (£)
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Share-based compensation | £ £ 14,180 £ 21,970
Share Success Plan (SS)    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Options granted during the period (in shares) | shares 0 0