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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
​ Adjusted interest Adjusted interest is calculated by adjusting the reported finance income and costs by the net interest from amortisation of discount on legacy provisions and by hedge accounting recognised in other comprehensive income. Fair value is equal to carrying value for all cash and cash equivalents. ​
​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021
​ | ​ | AER | ​ | AER
​ |  | £m |  | £m
Finance cost |  | 79 |  | 34
Finance income |  | (49) |  | (4)
Add back: |  |  |  |
Amortisation of discount on legacy provisions |  | (3) |  | —
Gain on hedge accounting recognised in finance income/cost |  | 21 |  | 4
Adjusted interest |  | 48 |  | 34
​

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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 2022-03-24 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_10_e&doctype=Standard -URIDate 2022-03-24 + Details
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- References No definition available. + Details
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