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Auditors' remuneration (Details) - GBP (£) £ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Auditors' remuneration
Fees payable to the Company's auditors for the audit of the Parent Company and Group accounts	£ 2	£ 3	£ 3
Audit of accounts of subsidiaries of the Group	4	5	4
Audit-related assurance services	5	3	2
Total audit and audit-related assurance services	11	11	9
Non-audit services			3
Total	11	11	12
Amount paid to the Company's auditor in respect of reporting on internal financial controls.	£ 4	£ 3
Amount paid to the Company's auditor in respect of the 2021 PCAOB group audit			£ 2

X

- Definition

The amount of fees paid or payable to the entity's auditors.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2024-03-27

+ Details

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- References

No definition available.

+ Details

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X

- Definition

The amount of fees paid to the entity's auditors in respect of the 2021 PCAOB group audit.

+ References

No definition available.

+ Details

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X

- Definition

The amount of fees paid to the entity's auditors in respect of reporting on internal financial controls.

+ References

No definition available.

+ Details

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X

- Definition

The amount of fees paid or payable to the entity's auditors for audit services in assurance services.

+ References

No definition available.

+ Details

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X

- Definition

The amount of fees paid or payable to the entity's auditors for audit services in subsidiaries.

+ References

No definition available.

+ Details

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X

- Definition

Fees payable to the Company's auditor for the audit of the Parent Company and Group accounts

+ References

No definition available.

+ Details

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- Definition

The amount of fees paid or payable to the non-audit services.

+ References

No definition available.

+ Details

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- Definition

Represent to information related to Total audit and audit-related assurance services.

+ References

No definition available.

+ Details

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