Disclosure Of Cash Flow Statement [Text Block]
| Concept | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2020-12-31 | 
|---|---|---|---|---|---|
| Disclosure of cash flow statement [text block] | — | — | — | — | — | 
| Description of accounting policy for determining components of cash and cash equivalents [text block] | — |  | — | — | — | 
| Cash and cash equivalents if different from statement of financial position [abstract] | |||||
| Cash and cash equivalents | 
                                                7, 2 0 6
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                5,715,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                3, 295
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Disclosure of information that enables users of financial statements to evaluate changes in liabilities arising from financing activities [text block] | — | — | — | — | — | 
| Disclosure of reconciliation of liabilities arising from financing activities [text block] | — |  | — | — | — | 
| Income taxes paid (refund) [abstract] | |||||
| Income taxes paid (refund), classified as operating activities | — | 
                                                7,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                311,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — |