Disclosure Of First-Time Adoption [Text Block]
| Concept | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | As at 2020-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of first-time adoption [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of comparative information prepared under previous GAAP [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of comparative information prepared under previous GAAP [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of comparative information prepared under previous GAAP [line items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | 
                                                56,176,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
                                                29,623,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | 
                                                11,499,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                226,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                160,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                95,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                13,481,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                1,299,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                207,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
                                                15,7 69
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                95,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                66,117,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | 
                                                29,623,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                19,236,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | 
                                                121,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                117,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                1,296,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                102,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                13,882,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                1,294,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                12,814,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                43,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                51,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                57 ,121
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                95,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                28,995,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                53,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                7 ,116
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                7, 116
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                –
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                11,944,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                11,944,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | 
                                                7 ,116
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | 
                                                10,381,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | 
                                                3,265,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,939,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | 
                                                9,005,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                11,944,000
                                                
                                                    
                                                        GBP
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — |