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v3.23.1

Income tax expense - Effective tax rate (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Effective tax rate |  |  |  |
Unadjusted income tax expense | [1] | £ 64 | £ 62 | £ 44
Tax adjustments on: |  |  |  |
Amortisation and impairment of intangible assets (excluding computer software) |  | 24 | 18 |
One-off and adjusting items - operating |  | 20 | 1 |
Net interest adjustments |  | (3) | (1) |
Adjusted income tax expense |  | 105 | 80 |
Adjusted profit before tax |  | £ 532 | £ 416 | £ 355
Adjusted effective tax rate |  | 19.70% | 19.40% |
CER |  |  |  |
Effective tax rate |  |  |  |
Unadjusted income tax expense |  | £ 63 |  |
Tax adjustments on: |  |  |  |
Amortisation and impairment of intangible assets (excluding computer software) |  | 22 |  |
One-off and adjusting items - operating |  | 19 |  |
Net interest adjustments |  | (3) |  |
Adjusted income tax expense |  | 101 |  |
Adjusted profit before tax |  | £ 515 |  |
Adjusted effective tax rate |  | 19.70% |  |
[1] | Taxation includes £58m (2021: £50m; 2020: £40m) in respect of overseas taxation.

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