| 19/09/18 | 08:00:02 | 19 Sept 2018 | | Half-year Report | RNS |
| 11/09/18 | 15:57:42 | 11 Sept 2018 | | Holding(s) in Company | RNS |
| 20/08/18 | 17:28:33 | 20 Aug 2018 | | Purchase of shares by a Director | RNS |
| 17/08/18 | 08:00:03 | 17 Aug 2018 | | Director/PDMR Shareholding | RNS |
| 03/08/18 | 11:45:28 | 3 Aug 2018 | | Holding(s) in Company | RNS |
| 01/08/18 | 11:50:11 | 1 Aug 2018 | | Holding(s) in Company | RNS |
| 31/07/18 | 12:45:17 | 31 Jul 2018 | | Director/PDMR Shareholding | RNS |
| 31/07/18 | 08:00:29 | 31 Jul 2018 | | Board Changes | RNS |
| 27/07/18 | 08:30:02 | 27 Jul 2018 | | Grant of Share Options | RNS |
| 24/07/18 | 13:06:04 | 24 Jul 2018 | | Holding(s) in Company | RNS |
| 19/07/18 | 13:39:47 | 19 Jul 2018 | | Holding(s) in Company | RNS |
| 17/07/18 | 18:55:11 | 17 Jul 2018 | | Holding(s) in Company | RNS |
| 12/07/18 | 12:00:53 | 12 Jul 2018 | | Holding(s) in Company | RNS |
| 11/07/18 | 08:00:03 | 11 Jul 2018 | | New Investments | RNS |
| 05/07/18 | 18:26:12 | 5 Jul 2018 | | Holding(s) in Company | RNS |
| 05/07/18 | 12:06:07 | 5 Jul 2018 | | Holding(s) in Company | RNS |
| 04/07/18 | 18:05:18 | 4 Jul 2018 | | Director/PDMR Shareholding | RNS |
| 03/07/18 | 17:48:45 | 3 Jul 2018 | | Purchase of shares by Directors | RNS |
| 26/06/18 | 08:05:01 | 26 Jun 2018 | | Equity Placing | RNS |
| 26/06/18 | 08:00:04 | 26 Jun 2018 | | Financial Statements for year to 31 December 2017 | RNS |
| 12/06/18 | 08:00:04 | 12 Jun 2018 | | 2018 Interim Results | RNS |
| 08/06/18 | 16:25:51 | 8 Jun 2018 | | Result of Meeting | RNS |
| 07/06/18 | 17:45:07 | 7 Jun 2018 | | Sale of Hydratron Limited | RNS |
| 31/05/18 | 16:13:15 | 31 May 2018 | | Holding(s) in Company | RNS |
| 30/05/18 | 08:00:07 | 30 May 2018 | | Trading Update | RNS |
| 29/05/18 | 17:47:59 | 29 May 2018 | | Directors' Dealings | RNS |
| 23/05/18 | 08:00:11 | 23 May 2018 | | Notice of GM | RNS |
| 02/05/18 | 08:00:12 | 2 May 2018 | | Quarterly update as at 31 March 2018 | RNS |
| 16/04/18 | 13:02:45 | 16 Apr 2018 | | Holding(s) in Company | RNS |
| 10/04/18 | 17:45:12 | 10 Apr 2018 | | Holding(s) in Company | RNS |
| 16/03/18 | 16:55:19 | 16 Mar 2018 | | Holding(s) in Company | RNS |
| 27/02/18 | 13:49:36 | 27 Feb 2018 | | Holding(s) in Company | RNS |
| 27/02/18 | 13:42:03 | 27 Feb 2018 | | Holding(s) in Company | RNS |
| 21/02/18 | 07:00:06 | 21 Feb 2018 | | Directorate Change | RNS |
| 13/02/18 | 13:05:13 | 13 Feb 2018 | | Result of AGM | RNS |
| 08/02/18 | 07:00:05 | 8 Feb 2018 | | Directorate Change | RNS |
| 06/02/18 | 14:37:37 | 6 Feb 2018 | | Holding(s) in Company | RNS |
| 01/02/18 | 15:20:18 | 1 Feb 2018 | | Requisition to convene General Meeting withdrawn | RNS |
| 31/01/18 | 07:00:04 | 31 Jan 2018 | | Total Voting Rights | RNS |
| 29/01/18 | 12:49:37 | 29 Jan 2018 | | Holding(s) in Company | RNS |
| 26/01/18 | 07:00:03 | 26 Jan 2018 | | Strategic update and cost reduction | RNS |
| 22/01/18 | 09:58:51 | 22 Jan 2018 | | Holding(s) in Company | RNS |
| 19/01/18 | 07:00:06 | 19 Jan 2018 | | Holding(s) in Company | RNS |
| 18/01/18 | 07:57:45 | 18 Jan 2018 | | Agreement with Riverfort and share placing | RNS |
| 16/01/18 | 09:55:58 | 16 Jan 2018 | | Requisition of General Meeting | RNS |
| 08/01/18 | 15:12:52 | 8 Jan 2018 | | Publication of Annual Report and Notice of AGM | RNS |
| 12/12/17 | 11:05:40 | 12 Dec 2017 | | Second Price Monitoring Extn | RNS |
| 12/12/17 | 11:00:14 | 12 Dec 2017 | | Price Monitoring Extension | RNS |
| 12/12/17 | 07:00:03 | 12 Dec 2017 | | Final Results | RNS |
| 13/11/17 | 07:00:04 | 13 Nov 2017 | | Quarterly Update to 30 September 2017 | RNS |
