Taxation - Tax Charge (Details) - GBP (£) £ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Corporation tax
Current year	£ 432.8	£ 425.8	£ 404.0
Prior years	(85.6)	(55.5)	(41.4)
Corporation tax	347.2	370.3	362.6
Deferred tax
Current year	(197.1)	9.4	(131.0)
Prior years	(1.0)	4.7	(1.5)
Deferred tax	(198.1)	14.1	(132.5)
Tax charge	£ 149.1	£ 384.4	£ 230.1

Adjustments of tax expense (income) recognised in the period for current tax of prior periods.

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Adjustments of tax expense (income) recognised in the period for the deferred tax of prior periods.

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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