Consolidated Statements of Shareholders' Deficit (Parenthetical) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Statement of Stockholders' Equity [Abstract]
Acquisitions costs	$ 16,464
Private Placement
Equity issuance cost	$ 5,783

Stock Issued During Period, Value, Acquisitions Costs

No definition available.

Name:	wejo_StockIssuedDuringPeriodValueAcquisitionsCosts
Namespace Prefix:	wejo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration