v3.23.3
Business combinations - Pro-Forma Information (Details) - GBP (£)
£ in Thousands
 1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 5 Months Ended 9 Months Ended 10 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2023
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2021
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
DEK Corporation Pty Ltd                    
Disclosure of detailed information about business combination [line items]                    
Revenue £ 1,703                  
Profit/ (loss) £ (371)                  
Revenue of combined entity as if combination occurred at beginning of period               £ 29,030    
Profit (loss) of combined entity as if combination occurred at beginning of period               (3,273)    
DEK Corporation Pty Ltd | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs               895    
Mudbath & Co Pty Ltd                    
Disclosure of detailed information about business combination [line items]                    
Revenue   £ 2,019                
Profit/ (loss)   £ 297                
Revenue of combined entity as if combination occurred at beginning of period               10,086    
Profit (loss) of combined entity as if combination occurred at beginning of period               (127)    
Mudbath & Co Pty Ltd | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs               277    
Lexicon                    
Disclosure of detailed information about business combination [line items]                    
Revenue           £ 11,867        
Profit/ (loss)           £ 605        
Revenue of combined entity as if combination occurred at beginning of period               16,269    
Profit (loss) of combined entity as if combination occurred at beginning of period               1,061    
Lexicon | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs               £ 770    
Business Agility Consulting BAC                    
Disclosure of detailed information about business combination [line items]                    
Revenue         £ 1,790          
Profit/ (loss)         £ (112)          
Revenue of combined entity as if combination occurred at beginning of period                 £ 4,391  
Profit (loss) of combined entity as if combination occurred at beginning of period                 227  
Acquisition related costs                 379  
Business Agility Consulting BAC | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs                 £ 292  
Levvel LLC                    
Disclosure of detailed information about business combination [line items]                    
Revenue     £ 11,639              
Profit/ (loss)     £ 1,192              
Revenue of combined entity as if combination occurred at beginning of period                   £ 39,467
Profit (loss) of combined entity as if combination occurred at beginning of period                   4,715
Levvel LLC | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs                   1,074
Endava d.o.o                    
Disclosure of detailed information about business combination [line items]                    
Revenue       £ 4,827            
Profit/ (loss)       £ 171            
Revenue of combined entity as if combination occurred at beginning of period                   13,419
Profit (loss) of combined entity as if combination occurred at beginning of period                   1,910
Endava d.o.o | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs                   716
Comtrade CDS                    
Disclosure of detailed information about business combination [line items]                    
Revenue             £ 27,227      
Profit/ (loss)             £ 2,128      
Revenue of combined entity as if combination occurred at beginning of period                   30,852
Profit (loss) of combined entity as if combination occurred at beginning of period                   2,507
Comtrade CDS | Legal and professional fees                    
Disclosure of detailed information about business combination [line items]                    
Acquisition related costs                   £ 1,550