Financial instruments fair value disclosures - Summary of Fair Value Hierarchy (Detail) £ in Thousands	Jun. 30, 2022 GBP (£)
Level 2 of fair value hierarchy [member] \| Not measured at fair value in statement of financial position but for which fair value is disclosed [member]
Disclosure of fair value measurement of liabilities [line items]
Total	£ 222
Level 2 of fair value hierarchy [member] \| Warrant liability [member]
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities at fair value	222
Level 3 of fair value hierarchy [member] \| Not measured at fair value in statement of financial position but for which fair value is disclosed [member]
Disclosure of fair value measurement of liabilities [line items]
Total	11,238
Level 3 of fair value hierarchy [member] \| Warrant liability [member]
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities at fair value	6,904
Level 3 of fair value hierarchy [member] \| Provision for deferred cash consideration [member]
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities at fair value	£ 4,334

- Definition

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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