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Finance income | 12 Months Ended
--- | ---
Dec. 31, 2022
Finance income. |
Finance income | C9. Finance income ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | 2022 |  | 2021 |  | 2020
​ | ​ | Note | ​ | £m | ​ | £m | ​ | £m
Bank interest received |  | ​ |  | 5 |  | 1 |  | 2
Interest receivable on foreign exchange swaps |  | ​ |  | — |  | — |  | 3
Fair value gain on hedge ineffectiveness | ​ | ​ | ​ | 22 | ​ | — | ​ | —
Hyperinflation accounting adjustment |  | ​ |  | 22 |  | 3 |  | —
Interest on net defined benefit asset |  | A10 |  | — |  | — |  | 1
Total finance income |  | ​ |  | 49 |  | 4 |  | 6
​ ​

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- Definition The disclosure of finance income. [Refer: Finance income] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_10_e&doctype=Standard -URIDate 2023-03-23 + Details
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Period Type: | duration

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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
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