Disclosure Of Non-Current Assets Held For Sale And Discontinued Operations [Text Block]
| Concept | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 
|---|---|---|---|---|---|---|
| Disclosure of non-current assets held for sale and discontinued operations [text block] | — | — | — | — | — | — | 
| Disclosure of analysis of single amount of discontinued operations [text block] | — | — | — | — | — | — | 
| Disclosure of analysis of single amount of discontinued operations [abstract] | ||||||
| Disclosure of analysis of single amount of discontinued operations [line items] | ||||||
| Profit (loss) before tax | 
                                                10,381,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                3,283,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                7 ,098
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                3,24 3
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                9,005,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                12,248,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Cash flows from continuing and discontinued operations [abstract] | ||||||
| Cash flows from (used in) operating activities [abstract] | ||||||
| Cash flows from (used in) operating activities | — | — | 
                                                5,126,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                3,502,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Cash flows from (used in) investing activities [abstract] | ||||||
| Cash flows from (used in) investing activities | — | — | 
                                                726,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                1,925,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Cash flows from (used in) financing activities [abstract] | ||||||
| Cash flows from (used in) financing activities | — | — | 
                                                2,909,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                3,007,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             |