Derivative financial instruments (Details) - GBP (£) £ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Disclosure of detailed information about financial instruments
Derivative financial instruments, assets	£ 23,059	£ 817
Derivative financial instruments, liabilities	(81)	(5,734)
Derivative financial instruments, non-current assets	16,462	499
Derivative financial instruments, non-current liabilities	(49)	(5,472)
Derivative financial instruments, current assets	6,597	318
Derivative financial instruments, current liabilities	(32)	(262)
Interest rate swap \| Derivatives used for hedging:
Disclosure of detailed information about financial instruments
Derivative financial instruments, assets	2,458
Derivative financial instruments, non-current assets	2,458
Embedded foreign exchange derivatives \| At fair value through profit and loss
Disclosure of detailed information about financial instruments
Derivative financial instruments, assets	20,286	809
Derivative financial instruments, non-current assets	13,786	499
Forward foreign exchange contracts \| At fair value through profit and loss
Disclosure of detailed information about financial instruments
Derivative financial instruments, assets	315	8
Derivative financial instruments, non-current assets	218
Interest rate swap \| Derivatives used for hedging:
Disclosure of detailed information about financial instruments
Derivative financial instruments, liabilities		(5,121)
Derivative financial instruments, non-current liabilities		(5,121)
Embedded foreign exchange derivatives \| At fair value through profit and loss:
Disclosure of detailed information about financial instruments
Derivative financial instruments, liabilities		(527)
Derivative financial instruments, non-current liabilities		(351)
Forward foreign exchange contracts \| Derivatives used for hedging:
Disclosure of detailed information about financial instruments
Derivative financial instruments, liabilities		(28)
Forward foreign exchange contracts \| At fair value through profit and loss:
Disclosure of detailed information about financial instruments
Derivative financial instruments, liabilities	(81)	£ (58)
Derivative financial instruments, non-current liabilities	£ (49)

The amount of current derivative financial assets. [Refer: Derivative financial assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities]

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The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The amount of non-current derivative financial assets. [Refer: Derivative financial assets]

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The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

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