| Date | Source | Headline | |
|---|---|---|---|
| 8th Oct 2018 | 9:00 am | RNS | Price Monitoring Extension |
| 8th Oct 2018 | 7:00 am | RNS | Proposed placing to raise a minimum of £10m |
| 28th Sep 2018 | 3:45 pm | RNS | Business Review Update |
| 10th Sep 2018 | 7:00 am | RNS | Half-year Report |
| 22nd Aug 2018 | 7:00 am | RNS | Re-refining technology patent extended to Europe |
| 15th Aug 2018 | 3:27 pm | RNS | Holding(s) in Company |
| 3rd Aug 2018 | 7:00 am | RNS | Trading Update |
| 27th Jun 2018 | 12:10 pm | RNS | Result of AGM |
| 4th Jun 2018 | 2:32 pm | RNS | 2017 Annual Report and Accounts and Notice of AGM |
| 31st May 2018 | 1:39 pm | RNS | Director/PDMR Shareholding |
| 31st May 2018 | 12:05 pm | RNS | Final Results |
| 25th May 2018 | 7:00 am | RNS | Change of Adviser |
| 2nd May 2018 | 7:00 am | RNS | Q1 Trading Update |
| 4th Apr 2018 | 7:00 am | RNS | Directorate Change |
| 29th Jan 2018 | 7:00 am | RNS | Pre-close Trading Update |
| 28th Dec 2017 | 7:00 am | RNS | Extension of working capital facilities |
| 16th Nov 2017 | 2:00 pm | RNS | Director/PDMR Shareholding |
| 2nd Nov 2017 | 5:16 pm | RNS | Holding(s) in Company |
| 31st Oct 2017 | 11:38 am | RNS | Holding(s) in Company |
| 27th Oct 2017 | 7:00 am | RNS | Grant of options |
| 26th Oct 2017 | 7:00 am | RNS | Q3 Trading Update |
| 5th Oct 2017 | 7:00 am | RNS | Holding(s) in Company |
| 25th Sep 2017 | 7:00 am | RNS | Half Yearly Report |
| 18th Sep 2017 | 7:00 am | RNS | New patent |
| 12th Jul 2017 | 7:00 am | RNS | Carbon Credit Service Agreement |
| 27th Jun 2017 | 11:00 am | RNS | Result of AGM |
| 27th Jun 2017 | 7:00 am | RNS | AGM Statement |
| 2nd Jun 2017 | 9:32 am | RNS | 2016 Annual Report and Accounts and Notice of AGM |
| 12th May 2017 | 7:00 am | RNS | Final Results |
| 8th May 2017 | 7:00 am | RNS | Initial Sale of Carbon Credits |
| 12th Apr 2017 | 7:00 am | RNS | Q1 2017 Trading Update |
| 11th Apr 2017 | 4:11 pm | RNS | Holding(s) in Company |
| 14th Feb 2017 | 10:52 am | RNS | Holding(s) in Company |
| 14th Feb 2017 | 10:48 am | RNS | Holding(s) in Company |
| 30th Jan 2017 | 7:00 am | RNS | Pre-close Trading Update |
| 24th Jan 2017 | 11:45 am | RNS | Holding(s) in Company |
| 12th Dec 2016 | 7:00 am | RNS | Trading Update |
| 20th Oct 2016 | 11:30 am | RNS | Holding(s) in Company |
| 17th Oct 2016 | 7:00 am | RNS | Additional Investment in Hydrodec of North America |
| 11th Oct 2016 | 11:20 am | RNS | Holding(s) in Company |
| 3rd Oct 2016 | 1:30 pm | RNS | Change of Registered Office |
| 16th Sep 2016 | 7:00 am | RNS | Half Yearly Report |
| 8th Sep 2016 | 7:00 am | RNS | Carbon Credit Project Approval |
| 18th Aug 2016 | 7:00 am | RNS | Contract Win |
| 21st Jul 2016 | 5:00 pm | RNS | Holding(s) in Company |
| 20th Jul 2016 | 7:00 am | RNS | Trading Update |
| 24th Jun 2016 | 4:58 pm | RNS | Director/PDMR Shareholding |
| 14th Jun 2016 | 12:50 pm | RNS | Holding(s) in Company |
| 10th Jun 2016 | 12:53 pm | RNS | Director's shareholding |
| 9th Jun 2016 | 5:35 pm | RNS | Directors' shareholding |
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