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Warrant Liability - Summary of Warrant Liability (Detail) - GBP (£) £ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Warrant Liability [Abstract]
Beginning balance	£ 8,336	£ 50,775
Warrants exercised		(2,400)
Fair value changes during the period	(1,210)	(14,364)
Ending balance	7,126	34,011
Current	6,904
Non-current	222		£ 8,336
Total	£ 7,126	£ 34,011	£ 8,336

X

- Definition

The amount of current warrant liabilities. [Refer: Warrant liability]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2021-01-01
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-URIDate 2021-03-24

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Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of non-current warrant liabilities. [Refer: Warrant liability]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-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
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Balance Type:	credit
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X

- Definition

The amount of warrant liabilities.

+ 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

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Balance Type:	credit
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X

- Definition

Fair value changes during the year.

+ References

No definition available.

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X

- Definition

Warrant liability.

+ References

No definition available.

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Balance Type:	na
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X

- Definition

Warrant liability exercised during the year.

+ References

No definition available.

+ Details

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