| 1st Apr 2021 1:40 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 24th Mar 2021 7:00 am | RNS | Launch of VariPLEX CE-Mark test | 
                                                                            
                                            | 17th Mar 2021 7:11 am | RNS | Launch of mobile processing laboratories | 
                                                                            
                                            | 15th Mar 2021 4:45 pm | RNS | Holdings in Company | 
                                                                            
                                            | 15th Mar 2021 11:30 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 12th Mar 2021 11:00 am | RNS | Holdings in Company | 
                                                                            
                                            | 1st Mar 2021 2:30 pm | RNS | Liquidity Agreement and Total Voting Rights | 
                                                                            
                                            | 24th Feb 2021 6:30 pm | RNS | Correction: Research and Development Update | 
                                                                            
                                            | 24th Feb 2021 7:00 am | RNS | Research and Development Update | 
                                                                            
                                            | 2nd Feb 2021 7:00 am | RNS | Launch of PCR assay portfolio | 
                                                                            
                                            | 1st Feb 2021 12:30 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 29th Jan 2021 7:00 am | RNS | Full Year 2020 Trading Update | 
                                                                            
                                            | 26th Jan 2021 5:30 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 13th Jan 2021 12:30 pm | RNS | Holdings in Company | 
                                                                            
                                            | 5th Jan 2021 7:00 am | RNS | Executive Management and Proposed Board Changes | 
                                                                            
                                            | 4th Jan 2021 2:15 pm | RNS | Liquidity Agreement and Total Voting Rights | 
                                                                            
                                            | 21st Dec 2020 7:00 am | RNS | New COVID-19 variant | 
                                                                            
                                            | 14th Dec 2020 7:00 am | RNS | Tests for new strains of COVID-19 and avian flu | 
                                                                            
                                            | 2nd Dec 2020 1:15 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 1st Dec 2020 2:15 pm | RNS | Liquidity Agreement and Total Voting Rights | 
                                                                            
                                            | 18th Nov 2020 6:20 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 16th Nov 2020 7:00 am | RNS | R&D Update | 
                                                                            
                                            | 13th Nov 2020 6:05 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 13th Nov 2020 7:00 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 12th Nov 2020 7:00 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 11th Nov 2020 11:05 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 2nd Nov 2020 1:00 pm | RNS | Liquidity Agreement and Total Voting Rights | 
                                                                            
                                            | 28th Oct 2020 4:41 pm | RNS | Second Price Monitoring Extn | 
                                                                            
                                            | 28th Oct 2020 4:35 pm | RNS | Price Monitoring Extension | 
                                                                            
                                            | 28th Oct 2020 2:06 pm | RNS | Second Price Monitoring Extn | 
                                                                            
                                            | 28th Oct 2020 2:00 pm | RNS | Price Monitoring Extension | 
                                                                            
                                            | 15th Oct 2020 11:30 am | RNS | Acquisition of IT-IS International Ltd | 
                                                                            
                                            | 2nd Oct 2020 1:30 pm | RNS | Liquidity Agreement and Total Voting Rights | 
                                                                            
                                            | 29th Sep 2020 5:00 pm | RNS | Result of AGM | 
                                                                            
                                            | 29th Sep 2020 11:05 am | RNS | Second Price Monitoring Extn | 
                                                                            
                                            | 29th Sep 2020 11:00 am | RNS | Price Monitoring Extension | 
                                                                            
                                            | 29th Sep 2020 9:05 am | RNS | Second Price Monitoring Extn | 
                                                                            
                                            | 29th Sep 2020 9:00 am | RNS | Price Monitoring Extension | 
                                                                            
                                            | 29th Sep 2020 7:00 am | RNS | Launch of COVID-19 antibody test | 
                                                                            
                                            | 29th Sep 2020 7:00 am | RNS | New UK DHSC Contract |