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BORROWINGS - Long term borrowings (Details) £ / shares in Units, € in Millions, ¥ in Millions, £ in Millions |  |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 29, 2026 EUR (€) | Jul. 17, 2022 £ / shares shares | Jun. 30, 2026 GBP (£) | Jun. 30, 2025 GBP (£) | Jun. 30, 2026 CNY (¥) | Dec. 31, 2025 GBP (£) | Dec. 31, 2025 CNY (¥)
Borrowings |  |  |  |  |  |  |
Non-current |  |  | £ 6,290 |  |  | £ 7,773 |
Proceeds from borrowings |  |  | 325 | £ 40 |  |  |
Repayment of term loan |  |  | 737 | £ 1,352 |  |  |
Euro Medium Term Note Programme |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Redemption of notes | € | € 850 |  |  |  |  |  |
Non-voting preference shares |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Non-current |  |  | 25 |  |  | 25 |
Number of preference shares issued | shares |  | 25,000,000 |  |  |  |  |
Issue price per share | £ / shares |  | £ 1 |  |  |  |  |
Coupon rate, preference shares |  | 9.50% |  |  |  |  |
Bonds |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Non-current |  |  | 5,871 |  |  | 7,363 |
Long-term notes in issue |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Non-current |  |  | £ 5,871 |  |  | £ 7,363 |
Average effective pre-swap interest rate |  |  | 3.20% |  | 3.20% | 3.20% | 3.20%
Average effective post-swap interest rate |  |  | 3.10% |  | 3.10% | 3.00% | 3.00%
Long-term notes in issue | After five years |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Non-current |  |  | £ 3,543 |  |  | £ 3,538 |
CNY long-term bank loans |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Non-current |  |  | £ 283 |  | ¥ 2,541 | £ 300 | ¥ 2,824
CNY long-term bank loans | Weighted average |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Interest rate |  |  | 2.90% |  | 2.90% | 2.90% | 2.90%

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- Definition Represents the average effective pre-swap interest rate of borrowings. + References No definition available. + Details
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- Definition Coupon rate, preference shares + References No definition available. + Details
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- Definition Number of preference shares issued. + References No definition available. + Details
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The cash outflow for repayments of bonds, notes and debentures. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard -URIDate 2025-03-27 + Details
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