Pension arrangements - Defined contribution schemes (Details) - GBP (£)	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Pension arrangements
Contributions to defined contribution pension arrangements	£ 3,827,000	£ 4,352,000	£ 4,974,000
Amount of contributions due that had not been paid to pension schemes	£ 547,000	£ 617,000

Amount of contributions due in respect of the current reporting period had not been paid over to pension schemes.

No definition available.

Name:	manu_ContributionsDueHadNotBeenPaidToPensionSchemes
Namespace Prefix:	manu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant