Notes And Other Explanatory Information [Abstract]
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                                        2022-01-01 to 2022-12-31  | 
                            
                        
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| Notes and other explanatory information [abstract] | |
| Disclosure of accounting judgements and estimates [text block] | 
                                        
                                             
                                                2. Critical accounting judgements and key sources of estimation uncertainty – Group
                                                
                                             
                                        
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| Disclosure of auditors' remuneration [text block] | 
                                        
                                             
                                                5. Auditor’s remuneration
                                                
                                             
                                        
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| Disclosure of basis of consolidation [text block] | 
                                        
                                             
                                                Basis of consolidation
                                                
                                             
                                        
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| Disclosure of basis of preparation of financial statements [text block] | 
                                        
                                             
                                                Basis of preparation
                                                
                                             
                                        
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| Disclosure of cash and cash equivalents [text block] | 
                                        
                                             
                                                21. Cash and cash equivalents – Group
                                                
                                             
                                        
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| Disclosure of changes in accounting policies [text block] | 
                                        
                                             
                                                Changes in accounting policies and disclosures
                                                
                                             
                                        
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| Disclosure of contingent liabilities [text block] | 
                                        
                                             
                                                27. Contingent liabilities – Group
                                                
                                             
                                        
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| Disclosure of credit risk [text block] | 
                                        
                                             
                                                Credit risk
                                                
                                             
                                        
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| Disclosure of deferred taxes [text block] | 
                                        
                                             
                                                28. Deferred tax asset/(liability) – Group
                                                
                                             
                                        
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| Disclosure of deposits from banks [text block] | 
                                        
                                             
                                                26. Loans and borrowings – Group
                                                
                                             
                                        
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| Disclosure of derivative financial instruments [text block] | 
                                        
                                             
                                                22. Derivative asset
                                                
                                             
                                        
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| Disclosure of dividends [text block] | 
                                        
                                             
                                                13. Dividends
                                                
                                             
                                        
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| Disclosure of earnings per share [text block] | 
                                        
                                             
                                                11. Loss per share
                                                
                                             
                                        
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| Disclosure of employee benefits [text block] | 
                                        
                                             
                                                9. Employee information
                                                
                                             
                                        
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| Disclosure of entity's operating segments [text block] | 
                                        
                                             
                                                6. Segment information
                                                
                                             
                                        
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| Disclosure of events after reporting period [text block] | 
                                        
                                             
                                                36. Subsequent events
                                                
                                             
                                        
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| Disclosure of finance cost [text block] | 
                                        
                                             
                                                10. Finance costs
                                                
                                             
                                        
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| Disclosure of financial instruments [text block] | 
                                        
                                             
                                                19. Financial instruments
                                                
                                             
                                        
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| Disclosure of financial risk management [text block] | 
                                        
                                             
                                                34. Financial risk management – Group
                                                
                                             
                                        
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| Disclosure of general information about financial statements [text block] | 
                                        
                                             
                                                General information
                                                
                                             
                                        
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| Disclosure of going concern [text block] | 
                                        
                                             
                                                Going concern
                                                
                                             
                                        
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| Disclosure of income tax [text block] | 
                                        
                                             
                                                12. Taxation
                                                
                                             
                                        
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| Disclosure of information about key management personnel [text block] | 
                                        
                                             
                                                8. Directors’ remuneration and key management personnel
                                                
                                             
                                        
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| Disclosure of intangible assets [text block] | 
                                        
                                             
                                                14. Intangible assets – Group
                                                
                                             
                                        
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| Disclosure of leases [text block] | 
                                        
                                             
                                                25. Lease liability – Group
                                                
                                             
                                        
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| Disclosure of liquidity risk [text block] | 
                                        
                                             
                                                Liquidity risk
                                                
                                             
                                        
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| Disclosure of market risk [text block] | 
                                        
                                             
                                                Market risk
                                                
                                             
                                        
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| Disclosure of other operating income [text block] | 
                                        
                                             
                                                Other operating income
                                                
                                             
                                        
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| Disclosure of profit (loss) from operating activities [text block] | 
                                        
                                             
                                                4. Operating profit/(loss) for the year is stated after charging/(crediting):
                                                
                                             
                                        
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| Disclosure of property, plant and equipment [text block] | 
                                        
                                             
                                                15. Property, plant and equipment – Group
                                                
                                             
                                        
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| Disclosure of provisions [text block] | 
                                        
                                             
                                                24
                                                
                                             
                                        
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| Disclosure of related party [text block] | 
                                        
                                             
                                                33. Related party transactions
                                                
                                             
                                        
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| Disclosure of reserves within equity [text block] | 
                                        
                                             
                                                31. Other reserves
                                                
                                             
                                        
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| Disclosure of revenue [text block] | 
                                        
                                             
                                                3. Revenue
                                                
                                             
                                        
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| Disclosure of revenue from contracts with customers [text block] | 
                                        
                                             
                                                18. Amounts receivable from customers – Group
                                                
                                             
                                        
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| Disclosure of share capital, reserves and other equity interest [text block] | 
                                        
                                             
                                                29. Share capital
                                                
                                             
                                        
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| Disclosure of share-based payment arrangements [text block] | 
                                        
                                             
                                                Share-based payments
                                                
                                             
                                        
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| Disclosure of subsidiaries [text block] | 
                                        
                                             
                                                17. Investment in subsidiaries – Group
                                                
                                             
                                        
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| Disclosure of trade and other payables [text block] | 
                                        
                                             
                                                23. Trade and other payables – Group
                                                
                                             
                                        
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| Disclosure of trade and other receivables [text block] | 
                                        
                                             
                                                20. Trade and other receivables – Group
                                                
                                             
                                        
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