Derivative financial liabilities - Convertible Senior Secured Notes (Details) - GBP (£) £ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 23, 2024
Financial liabilities
Beginning balance	£ 133,864
Ending balance	547,073
Convertible senior secured notes \| Financial liabilities at fair value through profit and loss category
Financial liabilities
Beginning balance	109,291
Fair value movements (other than from change in own credit risk), , prior substantial modification	12,363
In-kind interest paid	17,171
Foreign exchange movements, prior substantial modification	2,085
Change in fair value from own credit risk	(22,293)
As at December 23, 2024 immediately prior to substantial modification		£ 118,617
Impact of recognition of modified loan on fair value	455,859
Conversion of Convertible Senior Secured Notes	(280,605)
As at December 23, 2024 immediately after substantial modification		£ 293,871
Fair value movements (other than from change in own credit risk), after substantial modification	230,495
Foreign exchange movements, after substantial modification	(124)
Ending balance	£ 524,242

The decrease in the liability from the conversion of convertible instruments.

No definition available.

Name:	evtl_DecreaseInLiabilityFromConversionOfConvertibleInstruments
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impact of recognition of modified loan on fair value

+ References

No definition available.

+ Details

Name:	evtl_ImpactOfRecognitionOfModifiedLoanOnFairValue
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of increase (decrease) in liabilities, resulting from payment of interest in kind.

+ References

No definition available.

+ Details

Name:	evtl_IncreaseDecreaseInLiabilitiesPaymentOfInKindInterest
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase (decrease) in liabilities through exchange losses (gains) recognised in profit or loss excluding exchange differences, fair value measurement, liabilities, after substantial modification.

+ References

No definition available.

+ Details

Name:	evtl_IncreaseDecreaseInLiabilitiesThroughExchangeLossesGainsRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementLiabilitiesAfterSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase (decrease) in liabilities through exchange losses (gains) recognised in profit or loss excluding exchange differences, fair value measurement, liabilities, prior to substantial modification.

+ References

No definition available.

+ Details

Name:	evtl_IncreaseDecreaseInLiabilitiesThroughExchangeLossesGainsRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementLiabilitiesPriorToSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase (decrease) in liabilities through losses (gains) recognised in profit or loss excluding exchange differences, fair value measurement, liabilities, after substantial modification.

+ References

No definition available.

+ Details

Name:	evtl_IncreaseDecreaseInLiabilitiesThroughLossesGainsRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementLiabilitiesAfterSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase (decrease) in liabilities through losses (gains) recognised in profit or loss excluding exchange differences, fair value measurement, liabilities, prior to substantial modification

+ References

No definition available.

+ Details

Name:	evtl_IncreaseDecreaseInLiabilitiesThroughLossesGainsRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementLiabilitiesPriorToSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits after substantial modification.

+ References

No definition available.

+ Details

Name:	evtl_LiabilitiesAfterSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

+ References

No definition available.

+ Details

Name:	evtl_LiabilitiesBeforeSubstantialModification
Namespace Prefix:	evtl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	ifrs-full_DisclosureOfFinancialLiabilitiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The gains (losses) excluding exchange differences, recognised in other comprehensive income, on the fair value measurement of liabilities. [Refer: At fair value [member]; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_GainsLossesRecognisedInOtherComprehensiveIncomeExcludingExchangeDifferencesFairValueMeasurementLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_a&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2024-01-01
-Paragraph 28
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_d&doctype=Standard
-URIDate 2024-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2024-01-01
-Paragraph 23
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard
-URIDate 2024-03-27

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_b&doctype=Standard
-URIDate 2024-03-27

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_Liabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=evtl_ConvertibleSeniorSecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: