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Sources of estimation uncertainty and significant accounting judgements (Details) - GBP (£) £ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2017
Sources of estimation uncertainty and significant accounting judgements |  |  |  |
Intangible assets | £ 7,319 | £ 2,164 | £ 1,922 |
Percentage of share capital acquired | 100.00% |  |  |
Put option liability | £ 45 | £ 42 |  |
PCI India |  |  |  |
Sources of estimation uncertainty and significant accounting judgements |  |  |  |
Percentage of share capital acquired |  |  |  | 57.00%
Percentage of share capital not acquired |  |  |  | 43.00%
Put option liability | 45 |  |  |
Indefinite lived brands | Terminix CGU |  |  |  |
Sources of estimation uncertainty and significant accounting judgements |  |  |  |
Intangible assets | £ 1,292 |  |  |
Useful life, if assets had finite useful life | 15 years |  |  |
Amortisation charge, if assets had finite useful life | £ 86 |  |  |

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