Related party transactions - Key management compensation (Details)		6 Months Ended
Mar. 15, 2022 GBP (£)	Jun. 30, 2022 GBP (£) director	Jun. 30, 2021 GBP (£) director
Disclosure of transactions between related parties [line items]
Salaries and other short term employee benefits		£ 629,000	£ 140,000
Payments to defined contribution pension schemes		8,000	7,000
Share-based payments		79,000	76,000
Key management compensation		716,000	223,000
EMI share option scheme
Disclosure of transactions between related parties [line items]
Expense recognised from modifications of share-based payment arrangements	£ 6,545,000	6,545,000
Board of Director \| EMI share option scheme
Disclosure of transactions between related parties [line items]
Expense recognised from modifications of share-based payment arrangements		4,434,000
Imagination Industries Ltd
Disclosure of transactions between related parties [line items]
Amounts payable, related party transactions		0	2,945,000
Services received, related party transactions		£ 0	£ 127,000
Number of directors of entity to which related party has paid compensation on behalf of the entity \| director		0	2

Expense recognised from modifications of share-based payment arrangements

No definition available.

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- Definition

The number of directors of the entity to which related party has paid compensation on behalf of the entity

+ References

No definition available.

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- Definition

The amounts payable resulting from related party transactions. [Refer: Related parties [member]]

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- Definition

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

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No definition available.

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- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

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- Definition

The amount of compensation to key management personnel in the form of post-employment benefits. [Refer: Key management personnel of entity or parent [member]]

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- Definition

The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

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- Definition

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

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- Definition

The amount of services received in related party transactions. [Refer: Related parties [member]]

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