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Right of use of assets - Narrative (Details) - GBP (£)
1 Months Ended 3 Months Ended
Aug. 31, 2022
Jul. 31, 2021
Mar. 31, 2023
Jun. 21, 2022
WeWork        
Lessee, Lease, Description [Line Items]        
Lease term 12 months      
Lease cancellation notification period (in days) 90 days      
Soho, London, UK        
Lessee, Lease, Description [Line Items]        
Lease term   2 years    
Operating leases, noncancelable term   24 months    
Operating lease, monthly payment     £ 136,200  
Refundable lease deposit     136,200  
Denmark Hill, London, UK        
Lessee, Lease, Description [Line Items]        
Lease term       5 years
Operating lease, annual payment     £ 180,000