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Net debt - Offsetting in the balance sheet (Details) - GBP (£) £ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financial assets |  |
Gross amount | £ 3,035 | £ 1,188
Net amounts presented in the balance sheet | 3,035 | 1,188
Amount subject to master netting arrangement | (1,312) | (431)
Net amount | 1,723 | 757
Financial liabilities |  |
Gross amount | (6,384) | (2,564)
Net amounts presented in the balance sheet | (6,384) | (2,564)
Amount subject to master netting arrangement | 1,312 | 431
Net amount | (5,072) | (2,133)
Prepayments | 79 | 35
Social security and other taxes | 88 | 72
Contract liabilities | 259 | 167
Trade and other payables |  |
Financial liabilities |  |
Gross amount | (896) | (597)
Net amounts presented in the balance sheet | (896) | (597)
Net amount | (896) | (597)
Borrowings |  |
Financial liabilities |  |
Gross amount | (4,929) | (1,715)
Net amounts presented in the balance sheet | (4,929) | (1,715)
Amount subject to master netting arrangement | 1,291 | 423
Net amount | (3,638) | (1,292)
Lease liabilities |  |
Financial liabilities |  |
Gross amount | (467) | (217)
Net amounts presented in the balance sheet | (467) | (217)
Net amount | (467) | (217)
Derivative financial instruments |  |
Financial liabilities |  |
Gross amount | (92) | (35)
Net amounts presented in the balance sheet | (92) | (35)
Amount subject to master netting arrangement | 21 | 8
Net amount | (71) | (27)
Cash and Cash Equivalents |  |
Financial assets |  |
Gross amount | 2,170 | 668
Net amounts presented in the balance sheet | 2,170 | 668
Amount subject to master netting arrangement | (1,291) | (423)
Net amount | 879 | 245
Trade and other receivables |  |
Financial assets |  |
Gross amount | 843 | 506
Net amounts presented in the balance sheet | 843 | 506
Net amount | 843 | 506
Other financial assets |  |
Financial assets |  |
Gross amount | 1 | 2
Net amounts presented in the balance sheet | 1 | 2
Net amount | 1 | 2
Derivative financial instruments |  |
Financial assets |  |
Gross amount | 21 | 12
Net amounts presented in the balance sheet | 21 | 12
Amount subject to master netting arrangement | £ (21) | (8)
Net amount |  | £ 4

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