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Share-based payments (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based payments |
Schedule of movements in the number of share options | The movements in the number of EMI share options during the year were as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, | ​ | December 31,
​ | ​ | 2021 | ​ | 2020
​ | ​ | Number | ​ | Number
Outstanding, start of period |  | 16,817 | ​ | —
Granted during the period |  | 3,147 | ​ | 16,817
Forfeited during the period | ​ | (294) | ​ | —
Outstanding, end of period |  | 19,670 | ​ | 16,817
Schedule of movements in the weighted average exercise price of share options | The movements in the weighted average exercise price of share options during the year were as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, | ​ | December 31,
​ | ​ | 2021 | ​ | 2020
​ | ​ | £ | ​ | £
Outstanding, start of period |  | 143.28 | ​ | —
Granted during the period |  | 1,178.94 | ​ | 143.28
Forfeited during the period | ​ | 204.00 | ​ | —
Outstanding, end of period |  | 308.06 | ​ | 143.28
Schedule of share options outstanding | Details of share options outstanding at the end of the year are as follows: ​
​ | ​ | ​ | ​ | ​
​ | ​ | 31 December | ​ | 31 December
​ | ​ | 2021 | ​ | 2020
Weighted average exercise price (£) |  | 308.06 | ​ | 143.28
Number of share options outstanding |  | 19,670 | ​ | 16,817
Expected weighted average remaining vesting period (years) |  | 1.12 | ​ | 1.13
Schedule of fair value of options granted | ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, | ​ | December 31,
​ | ​ | 2021 | ​ | 2020
Average share price at date of grant (£) | ​ | 492.42 | ​ | 40.36
Expected volatility (%) |  | 50.00 | ​ | 50.00
Vesting period in years |  | 4 | ​ | 1
Dividends | ​ | — | ​ | —
Option life in years |  | 4.25 | ​ | 4.00
Risk-free interest rate (%) |  | 0.28 | ​ | (0.13)

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- Definition The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The disclosure of the number and weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_d&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The disclosure of the general terms and conditions of share-based payment arrangements. [Refer: Share-based payment arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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