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Financial instruments and risk management - Schedule of available undrawn committed bank facilities (Details) - GBP (£) £ in Millions | Jun. 30, 2022 | Jun. 30, 2021
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Disclosure of information about undrawn borrowing facilities [line items] |  |
Undrawn committed bank facilities | £ 2,789 | £ 2,518
Expiring within one year |  |
Disclosure of information about undrawn borrowing facilities [line items] |  |
Undrawn committed bank facilities | 793 | 540
Expiring between one and two years |  |
Disclosure of information about undrawn borrowing facilities [line items] |  |
Undrawn committed bank facilities | 103 | 691
Expiring after two years |  |
Disclosure of information about undrawn borrowing facilities [line items] |  |
Undrawn committed bank facilities | £ 1,893 | £ 1,287

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- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 50 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_50_a&doctype=Standard -URIDate 2021-03-24 + Details
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