Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share capital - share capital (Details)

v3.22.2.2
Share capital - share capital (Details) - USD ($)
5 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2022
Sep. 02, 2021
Apr. 25, 2021
Number of shares issued        
Number of shares outstanding at beginning of period 1 110,073,430    
Treasury shares (in shares) (1)      
Warrant exercised (in shares)   1,852,736    
Shares issued in exchange for Arqit Limited shares (in shares) 90,000,000 10,000,000    
Shares issued to PIPE investors (in shares) 7,100,000      
Number of shares outstanding at end of period 110,073,430 121,926,166    
Issued capital        
Share capital at beginning of period $ 1 $ 11,007    
Treasury shares (1)      
Warrant exercised   185    
Shares issued in exchange for Arqit Limited shares 9,000 1,000    
Shares issued to PIPE investors 710      
Share capital at end of period $ 11,007 $ 12,192    
Par value per share $ 0.0001 $ 0.0001 $ 0.0001 $ 1
Centricus [Member]        
Number of shares issued        
Shares issued in merger with Centricus (in shares) 12,973,430      
Issued capital        
Shares issued in merger with Centricus $ 1,297