Board Approval	12 Months Ended
Dec. 31, 2021
Text block [abstract]
Board Approval	33. Board Approval The Board of Directors approved and authorised for issue the financial statements on pages 140 to 210 in respect of the year ended 31 December 2021 on 2 March 2022.

The disclosure of the authorisation of financial statements for issue.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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