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Convertible loan notes - Summary of Interest-bearing Loans and Borrowings (Detail) - GBP (£) £ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [abstract]
Novartis Loan Note	£ 4,094	£ 3,771
Loan Notes – private placement	11,858	10,613
Total	15,952	14,384
Current	£ 15,952
Non-current		£ 14,384

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

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-URIDate 2021-03-24

+ Details

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Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	na
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X

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
-IssueDate 2021-01-01
-Paragraph 55
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Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of current borrowings. [Refer: Borrowings]

+ 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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X

- Definition

Convertible Loan Notes Issued

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Private placement – loan notes.

+ References

No definition available.

+ Details

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