Memorandum items - Contractual obligations of future (Details) - GBP (£) £ in Millions	Dec. 31, 2022	Dec. 31, 2021
Contractual obligations for future expenditure
Capital expenditure on property, plant and equipment	£ 8	£ 16
Contracts to purchase goods or services	677	682
Total capital commitments	685	698
Within 1 year
Contractual obligations for future expenditure
Contracts to purchase goods or services	£ 321	£ 301

The amount of future capital expenditures that the entity is committed to make.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
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-URIDate 2022-03-24

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- Definition

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

+ References

+ Details

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- Definition

The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2022-03-24
-Paragraph 74
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_74_c&doctype=Standard
-URIDate 2022-03-24

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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