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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Percentage

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Rights, Percentage1

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Actual, Percentage

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Share-Based Compensation Arrangement By Share-Based Payment Award, Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Payout, Percentage

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Share-Based Compensation Arrangement By Share-Based Payment Award, Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Percentage

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period

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Share-Based Compensation Arrangement By Share-Based Payment Award, Weighting Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Percentage

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- Definition

Share-Based Payment Arrangement, Face Value Of Shares Awarded

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard
-URIDate 2020-01-01

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Report of Directors Corporate Governance - Assessment of the LTI Award (Details)	3 Months Ended	12 Months Ended		36 Months Ended
	Dec. 31, 2020 GBP (£) £ / shares	Dec. 31, 2020 GBP (£)	Dec. 31, 2019	Dec. 31, 2020 GBP (£) USD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Average daily closing share price (gbp per share) \| £ / shares	£ 3.604
Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Performance period		3 years	3 years
Long-Term Incentive Awards \| Tranche 1
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting percentage		20.00%
Long-Term Incentive Awards \| Tranche 2
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting percentage		20.00%
Long-Term Incentive Awards \| Tranche 3
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting percentage		20.00%
Long-Term Incentive Awards \| Tranche 4
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting percentage		20.00%
Long-Term Incentive Awards \| Tranche 5
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting percentage		20.00%
2017 LTI Award \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Outcome				22.50%
2017 LTI Award \| Long-Term Incentive Awards \| Iain Mackay
Disclosure of terms and conditions of share-based payment arrangement [line items]
Shares vested (in shares) \| $				29,655
Face value awarded \| £	£ 106,877	£ 106,877		£ 106,877
2017 LTI Award \| Long-Term Incentive Awards \| Marc Moses
Disclosure of terms and conditions of share-based payment arrangement [line items]
Shares vested (in shares) \| $				86,491
Face value awarded \| £	£ 311,714	£ 311,714		£ 311,714
2017 LTI Award \| Average return on equity \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighting		20.00%
Payout percentage				10.00%
Actual				7.30%
Assessment				0.00%
Outcome				0.00%
2017 LTI Award \| Average return on equity \| Long-Term Incentive Awards \| Bottom of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				9.00%
2017 LTI Award \| Average return on equity \| Long-Term Incentive Awards \| Top of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				11.00%
2017 LTI Award \| Cost efficiency \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighting		20.00%
Payout percentage				58.00%
Actual				62.40%
Assessment				0.00%
Outcome				0.00%
2017 LTI Award \| Cost efficiency \| Long-Term Incentive Awards \| Bottom of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				60.00%
2017 LTI Award \| Cost efficiency \| Long-Term Incentive Awards \| Top of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				55.50%
2017 LTI Award \| Relative total shareholder return \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighting		20.00%
Assessment				0.00%
Outcome				0.00%
2017 LTI Award \| Risk and compliance \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighting		25.00%
Actual				65.00%
Assessment				65.00%
Outcome				16.25%
Performance period		3 years
2017 LTI Award \| Strategy \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighting		15.00%
2017 LTI Award \| Strategy, sustainable finance \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				3400000000000.00%
Actual				9300000000000.00%
Assessment				100.00%
Outcome				5.00%
2017 LTI Award \| Strategy, sustainable finance \| Long-Term Incentive Awards \| Bottom of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				3000000000000.00%
2017 LTI Award \| Strategy, sustainable finance \| Long-Term Incentive Awards \| Top of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				3700000000000.00%
2017 LTI Award \| Strategy, employee confidence \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				67.00%
Actual				62.00%
Assessment				0.00%
Outcome				0.00%
2017 LTI Award \| Strategy, employee confidence \| Long-Term Incentive Awards \| Bottom of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				65.00%
2017 LTI Award \| Strategy, employee confidence \| Long-Term Incentive Awards \| Top of range
Disclosure of terms and conditions of share-based payment arrangement [line items]
Payout percentage				70.00%
2017 LTI Award \| Strategy, customer \| Long-Term Incentive Awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Assessment				25.00%
Outcome				1.25%