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Inventories | 12 Months Ended
--- | ---
Dec. 31, 2022
Inventories |
Inventories | A4. Inventories Inventories are stated at the lower of cost and net realisable value. Cost is determined using the weighted average cost method. The cost of finished goods and work in progress comprises design costs, raw materials, direct labour, other direct costs and related production overheads (based on normal operating capacity). It excludes borrowing costs. Net realisable value is the estimated selling price less applicable variable selling expenses. ​
​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021
​ | ​ | £m | ​ | £m
Raw materials |  | 15 |  | 13
Work in progress |  | 2 |  | 2
Finished goods |  | 183 |  | 121
​ |  | 200 |  | 136
​ An inventory impairment charge of £3m was recognised in 2022 (2021: £16m). Inventory recognised as an expense during the period was £280m (2021: £210m).Reversals of inventory write-downs during the period were £nil (2021: £nil).

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- Definition The entire disclosure for inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 2 -IssueDate 2023-01-01 -Section Disclosure -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2023-en-r&doctype=Standard&dita_xref=IAS02_g36-39_TI -URIDate 2023-03-23 + Details
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