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Finance cost (Details) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finance cost
Hedged interest payable on medium-term notes issued	£ 61	£ 39	£ 10
Interest payable on bank loans and overdrafts	42	5	3
Interest payable on RCF	3	1	1
Interest payable on foreign exchange swaps	44	19	14
Interest payable on leases	25	10	6
Amortisation of discount on provisions	14	3
Fair value loss on hedge ineffectiveness		2
Total finance cost	£ 189	£ 79	£ 34

X

- Definition

The amount of costs associated with financing activities of the entity.

+ References

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- Definition

The amount of interest expense on bank loans and overdrafts. [Refer: Interest expense; Bank overdrafts]

+ References

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-IssueDate 2023-01-01
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- Definition

The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]

+ References

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-IssueDate 2023-01-01
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- Definition

The amount of interest expense on debt instruments issued. [Refer: Interest expense; Debt instruments issued]

+ References

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-IssueDate 2023-01-01
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- Definition

The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2023-01-01
-Paragraph 53
-Subparagraph b
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Amount of amortisation of discount on provisions.

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Fair value loss on hedge ineffectiveness

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- Definition

Amount of losses on fair value adjustment on debt repayment.

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No definition available.

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