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Provisions for liabilities and charges (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Reconciliation of changes in provisions for liabilities and charges |  |
Beginning balance | £ 61 | £ 64
Exchange differences | (35) | (1)
Additional provisions | 41 | 24
Used during the year | (46) | (25)
Unused amounts reversed | (8) | (3)
Acquisition of companies and businesses | 475 | 2
Unwinding of discount on provisions | 4 |
Ending balance | 492 | 61
Analysed as follows: |  |
Non-current | 359 | 34
Current | 133 | 27
Total | £ 492 | £ 61
UNITED STATES |  |
Provisions for liabilities and charges |  |
Discount rate used in cash flow projections |  | 0.90%
UNITED STATES | Minimum |  |
Provisions for liabilities and charges |  |
Discount rate used in cash flow projections | 3.50% |
UNITED STATES | Maximum |  |
Provisions for liabilities and charges |  |
Discount rate used in cash flow projections | 5.875% |
Termite damage claims |  |
Reconciliation of changes in provisions for liabilities and charges |  |
Exchange differences | £ (28) |
Additional provisions | 3 |
Used during the year | (10) |
Acquisition of companies and businesses | 335 |
Unwinding of discount on provisions | 3 |
Ending balance | 303 |
Analysed as follows: |  |
Total | £ 303 |
Utilisation period of provisions | 20 years |
Termite damage claims | Discount rate |  |
Provisions for liabilities and charges |  |
Discount rate used in cash flow projections | 4.31% | 0.90%
Discount rate after potential increase used in cash flow projections | 4.53% |
Percentage of reasonably possible increase in risk assumption | 5.00% |
Increase (decrease) in provision due to increase in assumption | £ (3) |
Termite damage claims | Claim cost |  |
Provisions for liabilities and charges |  |
Percentage of reasonably possible increase in risk assumption | 5.00% |
Increase (decrease) in provision due to increase in assumption | £ 14 |
Percentage of actual increase (decrease) in risk assumption | 17.00% |
Termite damage claims | Claim rate |  |
Provisions for liabilities and charges |  |
Percentage of reasonably possible increase in risk assumption | 5.00% |
Increase (decrease) in provision due to increase in assumption | £ 14 |
Percentage of actual increase (decrease) in risk assumption | (16.00%) |
Termite damage claims | Customer churn rate |  |
Provisions for liabilities and charges |  |
Percentage of reasonably possible increase in risk assumption | 1.00% |
Increase (decrease) in provision due to increase in assumption | £ 10 |
Percentage of actual increase (decrease) in risk assumption | 1.20% |
Termite damage claims | Minimum | Claim cost |  |
Provisions for liabilities and charges |  |
Historical time period for each material category of claim | 6 months |
Termite damage claims | Maximum | Claim cost |  |
Provisions for liabilities and charges |  |
Historical time period for each material category of claim | 5 years |
Self-insurance |  |
Reconciliation of changes in provisions for liabilities and charges |  |
Beginning balance | £ 37 | £ 32
Exchange differences | (7) |
Additional provisions | 30 | 18
Used during the year | (26) | (14)
Unused amounts reversed | (6) | (1)
Acquisition of companies and businesses | 136 | 2
Unwinding of discount on provisions | 1 |
Ending balance | 165 | 37
Analysed as follows: |  |
Total | £ 165 | 37
Estimated minimum percentage of insurance claims that should settle within the next five years | 50.00% |
Estimated maximum percentage of insurance claims that should settle within the next five years | 75.00% |
Environmental |  |
Reconciliation of changes in provisions for liabilities and charges |  |
Beginning balance | £ 11 | 14
Exchange differences |  | (1)
Used during the year | (2) | (2)
Acquisition of companies and businesses | 3 |
Ending balance | 12 | 11
Analysed as follows: |  |
Total | £ 12 | 11
Utilisation period of provisions | 5 years |
Other |  |
Reconciliation of changes in provisions for liabilities and charges |  |
Beginning balance | £ 13 | 18
Additional provisions | 8 | 6
Used during the year | (8) | (9)
Unused amounts reversed | (2) | (2)
Acquisition of companies and businesses | 1 |
Ending balance | 12 | 13
Analysed as follows: |  |
Total | £ 12 | £ 13
Utilisation period of provisions | 5 years |

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