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Share-based payments - Share options outstanding (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2022 Options £ / shares	Dec. 31, 2021 Options £ / shares	Dec. 31, 2020 Options £ / shares
Outstanding share options
Weighted average exercise price		£ 308.06	£ 143.28
Number of share options outstanding | Options		19,670	16,817
Expected weighted average remaining vesting period (years)		1 year 1 month 13 days	1 year 1 month 17 days
Number of options exercisable | Options		7,715	7,635
EMI share option scheme
Outstanding share options
Weighted average exercise price	£ 0.19	£ 308.06	£ 143.28
Number of share options outstanding | Options	21,656,655	19,670	16,817
Expected weighted average remaining vesting period (years)	2 years 7 months 20 days	1 year 1 month 13 days
Number of options exercisable | Options	9,594,507	7,715
Minimum
Outstanding share options
Exercise prices		£ 38.22
Minimum | EMI share option scheme
Outstanding share options
Exercise prices	£ 0.03
Maximum
Outstanding share options
Exercise prices		£ 1,298.49
Maximum | EMI share option scheme
Outstanding share options
Exercise prices	£ 1.18

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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