| Date | Source | Headline | |
|---|---|---|---|
| 2nd Jun 2008 | 2:54 pm | RNS | Total Voting Rights |
| 29th May 2008 | 3:10 pm | RNS | Additional Listing |
| 2nd May 2008 | 10:11 am | RNS | Total Voting Rights |
| 29th Apr 2008 | 4:35 pm | RNS | Price Monitoring Extension |
| 22nd Apr 2008 | 9:58 am | RNS | Holding(s) in Company |
| 17th Apr 2008 | 7:00 am | RNS | Holding(s) in Company |
| 4th Apr 2008 | 12:23 pm | RNS | Holding(s) in Company |
| 25th Mar 2008 | 7:01 am | RNS | Interim Results |
| 14th Mar 2008 | 7:00 am | RNS | Notice of Interim Results |
| 11th Mar 2008 | 4:35 pm | RNS | Price Monitoring Extension |
| 3rd Mar 2008 | 9:46 am | RNS | Total Voting Rights |
| 15th Feb 2008 | 11:02 am | RNS | Holding(s) in Company |
| 13th Feb 2008 | 5:40 pm | RNS | Holding(s) in Company |
| 7th Feb 2008 | 10:15 am | RNS | Holding(s) in Company |
| 7th Feb 2008 | 7:00 am | RNS | Total Voting Rights |
| 4th Feb 2008 | 7:01 am | RNS | Directorate Change |
| 1st Feb 2008 | 12:13 pm | RNS | Centrica deal approved |
| 28th Jan 2008 | 4:41 pm | RNS | Holding(s) in Company |
| 25th Jan 2008 | 4:16 pm | RNS | Holding(s) in Company |
| 24th Jan 2008 | 4:20 pm | RNS | Holding(s) in Company |
| 14th Jan 2008 | 7:01 am | RNS | New British Gas CHP agreement |
| 2nd Jan 2008 | 7:00 am | RNS | Chairman Appointment |
| 31st Dec 2007 | 7:00 am | RNS | Total Voting Rights |
| 21st Dec 2007 | 4:35 pm | RNS | Price Monitoring Extension |
| 21st Dec 2007 | 7:00 am | RNS | Blocklisting Interim Review |
| 20th Dec 2007 | 7:00 am | RNS | Director/PDMR Shareholding |
| 13th Dec 2007 | 10:46 am | RNS | Clean Energy Award Win |
| 7th Dec 2007 | 1:00 pm | RNS | Result of Meeting |
| 30th Nov 2007 | 7:00 am | RNS | Total Voting Rights |
| 26th Nov 2007 | 10:26 am | RNS | Holding(s) in Company |
| 7th Nov 2007 | 1:15 pm | RNS | Annual Report and Accounts |
| 7th Nov 2007 | 10:00 am | RNS | Annual Report and Accounts |
| 6th Nov 2007 | 7:00 am | RNS | Directorate Change |
| 1st Nov 2007 | 7:01 am | RNS | Holding(s) in Company |
| 31st Oct 2007 | 7:01 am | RNS | Total Voting Rights |
| 18th Oct 2007 | 4:59 pm | RNS | Holding(s) in Company |
| 28th Sep 2007 | 10:23 am | RNS | Director/PDMR Shareholding |
| 28th Sep 2007 | 7:04 am | RNS | Total Voting Rights |
| 13th Sep 2007 | 5:14 pm | RNS | Holding(s) in Company |
| 11th Sep 2007 | 7:00 am | RNS | Integrated CHP Demonstration |
| 11th Sep 2007 | 7:00 am | RNS | Final Results |
| 3rd Sep 2007 | 7:00 am | RNS | Notice of Results |
| 17th Aug 2007 | 6:16 pm | RNS | AIM Rule 26 |
| 13th Aug 2007 | 12:07 pm | RNS | Holding(s) in Company |
| 30th Jul 2007 | 3:48 pm | RNS | Total Voting Rights |
| 25th Jul 2007 | 4:33 pm | RNS | Holding in Company- Amendment |
| 25th Jul 2007 | 4:09 pm | RNS | Holding(s) in Company |
| 19th Jul 2007 | 7:00 am | RNS | CHP Demonstration |
| 16th Jul 2007 | 7:00 am | RNS | Holding(s) in Company |
| 29th Jun 2007 | 5:24 pm | RNS | Total Voting Rights |
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