Revenue from contracts with customers - Assets and liabilities related to contracts with customers (Details) - GBP (£) £ in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Revenue from contracts with customers
Contract liabilities - deferred revenue at beginning of year	£ (140,926)	£ (190,333)
Recognized in revenue during the year	108,001	135,560
Cash received/amounts invoiced during the year	(149,619)	(86,153)
Contract liabilities - deferred revenue at end of year	(182,544)	(140,926)
Current contract assets and contract liabilities
Revenue from contracts with customers
Contract assets - accrued revenue at beginning of year	40,544	45,966
Recognized in revenue during the year	34,948	39,037
Cash received/amounts invoiced during the year	(39,253)	(43,973)
Loss allowance		(486)
Contract assets - accrued revenue at end of year	36,239	40,544
Contract liabilities - deferred revenue at beginning of year	(117,984)	(171,574)
Recognized in revenue during the year	108,001	135,560
Cash received/amounts invoiced during the year	(149,619)	(86,153)
Reclassified during the year	(6,245)	4,183
Contract liabilities - deferred revenue at end of year	(165,847)	(117,984)
Non-current contract assets and contract liabilities
Revenue from contracts with customers
Contract liabilities - deferred revenue at beginning of year	(22,942)	(18,759)
Reclassified during the year	6,245	(4,183)
Contract liabilities - deferred revenue at end of year	£ (16,697)	£ (22,942)

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 105
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-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer.

+ References

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- Definition

The decrease in contract assets resulting from impairment. [Refer: Contract assets; Impairment loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
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- Definition

The decrease in contract liabilities resulting from the performance obligation being satisfied. [Refer: Contract liabilities; Performance obligations [member]]

+ References

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-Name IFRS
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- 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.

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No definition available.

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- Definition

Decrease through cash received or amounts invoiced, contract assets

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Increase (decrease) in contract liability through reclassification between current and non-current

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No definition available.

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Increase in contract assets through revenue recognized

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