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v3.22.1

Leases - Reconciliation of the finance lease creditors (Details) - GBP (£) £ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of quantitative information about right-of-use assets [line items] |  |
Beginning balance | £ 1,021 | £ 1,166
Additions | 1,084 |
Interest element of payments to finance lease creditors | (78) | (74)
Principal element of payments to finance lease creditors | (162) | (146)
Interest expense on leases | 77 | 74
Ending balance | £ 1,942 | £ 1,021
Bristol property |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Lease agreement term | 5 years |

X
- Definition Decrease in lease liabilities through interest payments + References No definition available. + Details
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Namespace Prefix: | evtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Decrease in lease liabilities through payments of principals + References No definition available. + Details
Name: | evtl_DecreaseInLeaseLiabilitiesThroughPaymentsOfPrincipals
Namespace Prefix: | evtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase in lease liabilities through interest charged + References No definition available. + Details
Name: | evtl_IncreaseInLeaseLiabilitiesThroughInterestCharged
Namespace Prefix: | evtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase in lease liabilities through new leases + References No definition available. + Details
Name: | evtl_IncreaseInLeaseLiabilitiesThroughNewLeases
Namespace Prefix: | evtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Lease agreement term. + References No definition available. + Details
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Namespace Prefix: | evtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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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. + References No definition available. + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |