| 07/11/17 | 16:30:20 | 7 Nov 2017 | | Directors Shareholdings | RNS |
| 07/11/17 | 13:01:16 | 7 Nov 2017 | | Holding(s) in Company | RNS |
| 03/11/17 | 12:31:11 | 3 Nov 2017 | | Result of General Meeting | RNS |
| 18/10/17 | 08:00:05 | 18 Oct 2017 | | Change of Advisers | RNS |
| 16/10/17 | 17:40:44 | 16 Oct 2017 | | Second Price Monitoring Extn | RNS |
| 16/10/17 | 17:35:20 | 16 Oct 2017 | | Price Monitoring Extension | RNS |
| 16/10/17 | 16:00:01 | 16 Oct 2017 | | Result of Oversubscribed Placing | RNS |
| 16/10/17 | 09:00:02 | 16 Oct 2017 | | Proposed Placing | RNS |
| 13/10/17 | 15:23:56 | 13 Oct 2017 | | Holding(s) in Company | RNS |
| 13/10/17 | 13:11:47 | 13 Oct 2017 | | Holding(s) in Company | RNS |
| 13/10/17 | 13:03:33 | 13 Oct 2017 | | Holding(s) in Company | RNS |
| 19/09/17 | 08:00:04 | 19 Sept 2017 | | Half-year Report | RNS |
| 31/08/17 | 08:00:05 | 31 Aug 2017 | | Trading Update | RNS |
| 24/07/17 | 18:20:10 | 24 Jul 2017 | | Result of AGM | RNS |
| 29/06/17 | 11:38:03 | 29 Jun 2017 | | Final Results | RNS |
| 13/06/17 | 08:00:03 | 13 Jun 2017 | | Half-year Report | RNS |
| 12/06/17 | 08:00:02 | 12 Jun 2017 | | Quarterly Update | RNS |
| 01/06/17 | 08:00:05 | 1 Jun 2017 | | Appointment of adviser | RNS |
| 30/03/17 | 16:47:45 | 30 Mar 2017 | | Director Declaration | RNS |
| 16/03/17 | 13:28:17 | 16 Mar 2017 | | Exercise of Options | RNS |
| 27/02/17 | 15:16:48 | 27 Feb 2017 | | Director/PDMR Shareholding | RNS |
| 16/02/17 | 12:42:22 | 16 Feb 2017 | | Exercise of Options | RNS |
| 14/02/17 | 13:08:30 | 14 Feb 2017 | | Result of AGM | RNS |
| 22/12/16 | 10:25:06 | 22 Dec 2016 | | Publication of Annual Report | RNS |
| 13/12/16 | 07:00:09 | 13 Dec 2016 | | 2016 Audited Preliminary Results | RNS |
| 08/12/16 | 07:00:10 | 8 Dec 2016 | | Acquisition of Martract Limited | RNS |
| 06/12/16 | 10:11:08 | 6 Dec 2016 | | Notice of Results | RNS |
| 11/10/16 | 15:09:07 | 11 Oct 2016 | | Grant of Share Options | RNS |
| 10/10/16 | 14:40:24 | 10 Oct 2016 | | Notice to Shareholders in accordance with FRS 101 | RNS |
| 30/08/16 | 08:00:14 | 30 Aug 2016 | | Update on Recent Trading | RNS |
| 03/08/16 | 17:27:53 | 3 Aug 2016 | | Grant of Share Options | RNS |
| 14/06/16 | 08:00:09 | 14 Jun 2016 | | Half-year Report | RNS |
| 27/04/16 | 08:00:11 | 27 Apr 2016 | | Update on Recent Trading | RNS |
| 02/03/16 | 14:05:45 | 2 Mar 2016 | | Exercise of Options | RNS |
| 17/02/16 | 13:14:41 | 17 Feb 2016 | | Result of AGM | RNS |
| 17/02/16 | 07:00:06 | 17 Feb 2016 | | AGM Statement | RNS |
| 11/02/16 | 07:00:11 | 11 Feb 2016 | | Update on investigation into fatality | RNS |
| 26/01/16 | 13:45:02 | 26 Jan 2016 | | Capital Markets Day | RNS |
| 22/01/16 | 15:42:01 | 22 Jan 2016 | | Issue of Equity | RNS |
| 15/01/16 | 10:50:07 | 15 Jan 2016 | | Issue of Equity | RNS |
| 08/01/16 | 15:05:00 | 8 Jan 2016 | | Publication of Annual Report and Notice of AGM | RNS |
| 23/12/15 | 07:00:05 | 23 Dec 2015 | | Exercise of Options | RNS |
| 23/12/15 | 07:00:05 | 23 Dec 2015 | | Grant of Share Options | RNS |
| 15/12/15 | 07:00:05 | 15 Dec 2015 | | Final Results | RNS |
| 17/11/15 | 07:00:06 | 17 Nov 2015 | | Exercise of Options | RNS |
| 10/11/15 | 07:00:06 | 10 Nov 2015 | | Full Year Trading Update | RNS |
| 05/10/15 | 11:22:11 | 5 Oct 2015 | | Holding(s) in Company | RNS |
| 05/10/15 | 08:00:17 | 5 Oct 2015 | | Director Shareholding | RNS |
| 01/10/15 | 18:20:06 | 1 Oct 2015 | | Exercise of Options | RNS |
| 29/09/15 | 15:30:04 | 29 Sept 2015 | | Exercise of Options | RNS |