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Equity - Schedule of movements in hedging and exchange reserve (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | £ 8,431 | £ 8,440 | £ 10,156
Other comprehensive income/(loss) | 1,482 | (865) | (164)
Transfers from other retained earnings |  |  | 0
Ending balance | 9,514 | 8,431 | 8,440
Cost of hedging reserve | 22 | 22 | 30
Hedging reserve |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | 113 | 93 | (37)
Other comprehensive income/(loss) | (87) | 20 | 125
Transfers from other retained earnings |  |  | 5
Ending balance | 26 | 113 | 93
Exchange reserve |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | (1,694) | (1,022) | (781)
Other comprehensive income/(loss) | 622 | (672) | (241)
Transfers from other retained earnings |  |  | 0
Ending balance | (1,072) | (1,694) | (1,022)
Hedging and exchange reserve |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | (1,581) | (929) | (818)
Other comprehensive income/(loss) | 535 | (652) | (116)
Transfers from other retained earnings |  |  | 5
Ending balance | £ (1,046) | £ (1,581) | £ (929)

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