| 7th Jan 2008 4:20 pm | RNS | Director Shareholding | 
                                                                            
                                            | 17th Dec 2007 7:00 am | RNS | Appointment of Chairman | 
                                                                            
                                            | 17th Dec 2007 7:00 am | RNS | Preliminary Results | 
                                                                            
                                            | 23rd Nov 2007 7:01 am | RNS | Notice of Results | 
                                                                            
                                            | 2nd Nov 2007 11:45 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 26th Oct 2007 7:01 am | RNS | Gas Supply Agreement | 
                                                                            
                                            | 5th Oct 2007 9:01 am | RNS | Debt Fundraising Complete | 
                                                                            
                                            | 20th Sep 2007 7:01 am | RNS | FDA approval | 
                                                                            
                                            | 3rd Sep 2007 7:01 am | RNS | Re: Orders | 
                                                                            
                                            | 30th Aug 2007 7:01 am | RNS | Change of registered address | 
                                                                            
                                            | 21st Aug 2007 7:00 am | RNS | Aerospace - development plans | 
                                                                            
                                            | 3rd Aug 2007 7:00 am | RNS | AIM rule 26 compliance | 
                                                                            
                                            | 26th Jun 2007 7:01 am | RNS | Directorate Appointment | 
                                                                            
                                            | 14th May 2007 7:01 am | RNS | Interim Results | 
                                                                            
                                            | 23rd Apr 2007 7:00 am | RNS | Notice of Results | 
                                                                            
                                            | 2nd Apr 2007 9:17 am | RNS | Change of Adviser | 
                                                                            
                                            | 22nd Mar 2007 11:40 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 13th Mar 2007 4:47 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 13th Mar 2007 4:46 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 19th Feb 2007 7:01 am | RNS | US Order | 
                                                                            
                                            | 13th Feb 2007 6:02 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 12th Feb 2007 7:01 am | RNS | Sale of holding in Hardide | 
                                                                            
                                            | 12th Feb 2007 7:01 am | RNS | Directorate Change | 
                                                                            
                                            | 29th Jan 2007 5:07 pm | RNS | Result of AGM | 
                                                                            
                                            | 21st Dec 2006 5:27 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 8th Dec 2006 3:35 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 7th Dec 2006 7:01 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 6th Dec 2006 7:01 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 4th Dec 2006 7:01 am | RNS | Final Results | 
                                                                            
                                            | 27th Nov 2006 7:00 am | RNS | Notice of Results | 
                                                                            
                                            | 14th Nov 2006 1:39 pm | RNS | Block Listing Return | 
                                                                            
                                            | 4th Oct 2006 4:25 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 19th Sep 2006 10:19 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 19th Sep 2006 10:13 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 7th Sep 2006 7:02 am | RNS | Patent Announcement | 
                                                                            
                                            | 1st Aug 2006 7:02 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 31st Jul 2006 10:48 am | RNS | Trading Statement | 
                                                                            
                                            | 29th Jun 2006 12:00 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 30th May 2006 2:50 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 26th May 2006 7:02 am | RNS | Reduced holding in Hardide |