Disclosure Of Entity's Operating Segments [Text Block]
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of entity's operating segments [text block] | — | — | — | — | — | — |  | — | — | — | — | — | — | — | — | — | 
| Disclosure of operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of operating segments [abstract] | ||||||||||||||||
| Disclosure of operating segments [line items] | ||||||||||||||||
| Revenue | — | — | — | — | — | — | 
                                                223,466,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                23 3, 67 1
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Tax expense (income) | — | — | — | — | — | — | 
                                                3,888,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                3 ,65 1
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) before tax | — | — | — | — | — | — | 
                                                4,92 8
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                789,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                1,0 40
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                1 ,04 0
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                4 , 4 4 0
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                4 , 4 4 0
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                —
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Assets | — | — | — | — | — | 
                                                229,00 3
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                230,159,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
| Investments accounted for using equity method | — | — | — | — | — | 
                                                353,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                159,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
| Liabilities | — | — | — | — | — | 
                                                1 0 7, 9 2 3
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                105,981,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
| Cash flows from (used in) operating activities | — | — | — | — | — | — | 
                                                16,895,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                28 , 576
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) investing activities | — | — | — | — | — | — | 
                                                2 , 2 15
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                23 5
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) financing activities | — | — | — | — | — | — | 
                                                10 , 873
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                3  8 ,1 6 8
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
| Disclosure of products and services [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of products and services [abstract] | ||||||||||||||||
| Disclosure of products and services [line items] | ||||||||||||||||
| Disclosure of geographical areas [text block] | — | — | — | — | — | — |  | — | — | — | — | — | — | — | — | — | 
| Disclosure of geographical areas [abstract] | ||||||||||||||||
| Disclosure of geographical areas [line items] | ||||||||||||||||
| Disclosure of major customers [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of major customers [abstract] | ||||||||||||||||
| Disclosure of major customers [line items] |