| Date | Source | Headline | |
|---|---|---|---|
| 2nd Nov 2012 | 7:00 am | RNS | Convertible Unsecured Loan Stock |
| 31st Oct 2012 | 3:37 pm | RNS | Director's dealing in securities |
| 31st Oct 2012 | 7:00 am | RNS | Director's dealing in securities |
| 25th Oct 2012 | 7:00 am | RNS | Director's dealing in securities |
| 24th Oct 2012 | 7:00 am | RNS | Appointment of Chairman |
| 12th Sep 2012 | 10:50 am | RNS | Notification of Interest |
| 6th Sep 2012 | 7:00 am | RNS | Interim Results |
| 16th Aug 2012 | 11:13 am | RNS | Notification of Interim Results |
| 9th Aug 2012 | 2:07 pm | RNS | Directorate Change |
| 6th Aug 2012 | 10:35 am | RNS | Joint marketing agreement |
| 3rd Jul 2012 | 7:00 am | RNS | Director's dealing |
| 27th Jun 2012 | 2:37 pm | RNS | US approves treatment of PCB-contaminated oil |
| 25th Jun 2012 | 12:00 pm | RNS | Result of AGM |
| 25th Jun 2012 | 7:00 am | RNS | AGM Statement |
| 15th Jun 2012 | 7:00 am | RNS | Contract Win |
| 8th Jun 2012 | 1:03 pm | RNS | Appointment of Chief Financial Officer |
| 22nd May 2012 | 4:17 pm | RNS | Notification of interest |
| 4th May 2012 | 12:36 pm | RNS | Director's Dealing |
| 25th Apr 2012 | 4:15 pm | RNS | EPA issues draft approval |
| 19th Apr 2012 | 7:00 am | RNS | Final Results |
| 3rd Apr 2012 | 7:00 am | RNS | Notice of Results |
| 13th Mar 2012 | 11:53 am | RNS | Change of Registered Office |
| 17th Feb 2012 | 3:44 pm | RNS | Director Dealing |
| 1st Feb 2012 | 2:25 pm | RNS | Director's Dealing |
| 30th Jan 2012 | 1:12 pm | RNS | Directorate Change |
| 25th Jan 2012 | 9:14 am | RNS | Director's dealing |
| 18th Jan 2012 | 5:35 pm | RNS | Director's Dealing |
| 17th Jan 2012 | 3:24 pm | RNS | Director's dealing |
| 16th Jan 2012 | 7:00 am | RNS | Trading Update |
| 7th Dec 2011 | 7:00 am | RNS | Appointments |
| 28th Nov 2011 | 3:30 pm | RNS | Notification of Interest |
| 28th Nov 2011 | 12:15 pm | RNS | Notification of Interest |
| 28th Nov 2011 | 11:43 am | RNS | Total Voting Rights |
| 21st Nov 2011 | 10:46 am | RNS | Result of General Meeting |
| 3rd Nov 2011 | 3:15 pm | RNS | Posting of Circular |
| 2nd Nov 2011 | 7:00 am | RNS | Appointment of CEO and Placing |
| 31st Oct 2011 | 4:17 pm | RNS | Re press speculation |
| 26th Sep 2011 | 11:26 am | RNS | Director's dealing - Replacement |
| 26th Sep 2011 | 7:00 am | RNS | Director's dealing |
| 21st Sep 2011 | 7:00 am | RNS | Interim Results |
| 26th Aug 2011 | 3:00 pm | RNS | Director change in information |
| 12th Jul 2011 | 7:00 am | RNS | Director's dealing |
| 11th Jul 2011 | 11:28 am | RNS | Signing of first operating joint venture in Japan |
| 23rd Jun 2011 | 7:00 am | RNS | Directorate Change |
| 9th Jun 2011 | 11:51 am | RNS | Result of AGM |
| 9th Jun 2011 | 7:00 am | RNS | AGM Statement |
| 8th Jun 2011 | 8:38 am | RNS | Notification of Interest |
| 25th May 2011 | 10:01 am | RNS | £2 million debt financing to fund growth |
| 17th May 2011 | 12:33 pm | RNS | Annual Report & Notice of AGM |
| 26th Apr 2011 | 5:17 pm | RNS | Notification of Interest |
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