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Analysis of cash and cash equivalents (Details) € in Millions, £ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 GBP (£) | Dec. 31, 2020 GBP (£) | Dec. 31, 2019 GBP (£) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 EUR (€) | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 GBP (£)
Analysis of cash and cash equivalents |  |  |  |  |  |  |
Cash |  | £ 124,489 | £ 80,993 |  |  |  | £ 91,368
Cash equivalents |  | 14,710 | 19,595 |  |  |  | 17,568
Cash and cash equivalents at 1 January | £ 139,199 | 100,588 | 108,936 |  |  |  |
Net increase/(decrease) in cash and cash equivalents | 51,507 | 38,611 | (8,348) |  |  |  |
Cash and cash equivalents at 31 December | 190,706 | 139,199 | 100,588 |  |  |  |
Cash and balances at central banks | 177,757 | 124,489 | 80,993 |  |  |  |
Trading assets | 7,137 | 9,220 | 12,578 |  |  |  |
Other financial assets | 16 | 173 | 459 |  |  |  |
Loans to banks - amortised cost | 5,796 | 5,317 | 6,558 |  |  |  |
Total cash and cash equivalents | 190,706 | 139,199 | 100,588 |  |  |  | £ 108,936
Cash collateral posted with bank counterparties | £ 4,293 | £ 7,592 | £ 7,570 |  |  |  |
NWM N.V. |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |
Mandatory reserve deposits at central banks | € |  |  |  | € 60 | € 81 | € 47 |
Royal Bank of Scotland International (Holdings) Limited |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |
Mandatory reserve deposits at central banks | € |  |  |  | € 123 | € 59 | € 58 |

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- Definition The amount of cash on hand and demand deposits. [Refer: Cash on hand] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of cash and bank balances held at central banks. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_i&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in cash and cash equivalents after the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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