Intangible assets - Reconciliation of intangible assets (Details) - GBP (£) £ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Reconciliation of intangible assets
Opening amount			£ 837,564	£ 812,382
Additions			232,001	217,436
Disposals			(20,858)	(9,951)
Amortization charge	£ (49,423)	£ (50,495)	(102,693)	(97,340)
Closing amount	946,014	922,527	946,014	922,527
Cost / gross value
Reconciliation of intangible assets
Opening amount			1,392,130	1,368,446
Closing amount	1,480,251	1,472,518	1,480,251	1,472,518
Accumulated depreciation, amortization and impairment
Reconciliation of intangible assets
Opening amount			(554,566)	(556,064)
Closing amount	(534,237)	(549,991)	(534,237)	(549,991)
Goodwill
Reconciliation of intangible assets
Opening amount			421,453	421,453
Closing amount	421,453	421,453	421,453	421,453
Goodwill \| Cost / gross value
Reconciliation of intangible assets
Opening amount			421,453	421,453
Closing amount	421,453	421,453	421,453	421,453
Registrations
Reconciliation of intangible assets
Opening amount			408,579	384,885
Additions			230,952	215,086
Disposals			(20,858)	(9,951)
Amortization charge			(101,051)	(95,863)
Closing amount	517,622	494,157	517,622	494,157
Registrations \| Cost / gross value
Reconciliation of intangible assets
Opening amount			943,896	924,829
Closing amount	1,030,967	1,026,551	1,030,967	1,026,551
Registrations \| Accumulated depreciation, amortization and impairment
Reconciliation of intangible assets
Opening amount			(535,317)	(539,944)
Closing amount	(513,345)	(532,394)	(513,345)	(532,394)
Other intangible assets
Reconciliation of intangible assets
Opening amount			7,532	6,044
Additions			1,049	2,350
Amortization charge			(1,642)	(1,477)
Closing amount	6,939	6,917	6,939	6,917
Other intangible assets \| Cost / gross value
Reconciliation of intangible assets
Opening amount			26,781	22,164
Closing amount	27,831	24,514	27,831	24,514
Other intangible assets \| Accumulated depreciation, amortization and impairment
Reconciliation of intangible assets
Opening amount			(19,249)	(16,120)
Closing amount	£ (20,892)	£ (17,597)	£ (20,892)	£ (17,597)

The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_i&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_vi&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_IntangibleAssetsAndGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_GoodwillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=manu_RegistrationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_OtherIntangibleAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: