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Taxation (Tables)
6 Months Ended
Jun. 30, 2021
Disclosure of income tax [Abstract]  
Schedule of relationship between tax expense and accounting profit
An explanation of the relationship between tax expense and accounting profit is set out below:
Half-year
to 30 June
2021
Half-year
to 30 June
2020
Half-year
to 31 Dec
2020
£m£m£m
Profit (loss) before tax3,905 (602)1,828 
UK corporation tax thereon at 19 per cent (2020: 19 per cent)
(742)114 (347)
Impact of surcharge on banking profits(229)44 (151)
Non-deductible costs: conduct charges(7)(11)(13)
Non-deductible costs: bank levy— — (38)
Other non-deductible costs(67)(40)(34)
Non-taxable income35 76 (17)
Tax relief on coupons on other equity instruments40 44 42 
Tax-exempt gains on disposals36 3 78 
Tax losses where no deferred tax recognised(9)(1)(57)
Remeasurement of deferred tax due to rate changes970 354 (4)
Differences in overseas tax rates(25)13 2 
Policyholder tax(36)(23)(23)
Policyholder deferred tax asset in respect of life assurance expenses4 — 49 
Adjustments in respect of prior years(10)48 56 
Tax effect of share of results of joint ventures— — (3)
Tax (expense) credit(40)621 (460)