| 28/02/19 | 07:00:05 | 28 Feb 2019 | | Total Voting Rights | RNS |
| 30/01/19 | 07:00:03 | 30 Jan 2019 | | Trading Update | RNS |
| 22/01/19 | 13:24:59 | 22 Jan 2019 | | Transaction in Own Shares | RNS |
| 12/12/18 | 15:45:01 | 12 Dec 2018 | | Holding(s) in Company | RNS |
| 12/12/18 | 15:44:00 | 12 Dec 2018 | | Holding(s) in Company | RNS |
| 20/11/18 | 07:00:08 | 20 Nov 2018 | | Half-year Report | RNS |
| 14/11/18 | 16:59:15 | 14 Nov 2018 | | Holding(s) in Company | RNS |
| 09/11/18 | 07:00:01 | 9 Nov 2018 | | Acquisition Optoelectronics & Displays specialist | RNS |
| 17/10/18 | 08:00:05 | 17 Oct 2018 | | Trading Statement & Notice of Results | RNS |
| 11/10/18 | 15:04:09 | 11 Oct 2018 | | Holding(s) in Company | RNS |
| 12/09/18 | 08:00:06 | 12 Sept 2018 | | $3.2m power contract to defence & aerospace co | RNS |
| 10/09/18 | 18:00:02 | 10 Sept 2018 | | Holding(s) in Company | RNS |
| 03/07/18 | 08:00:03 | 3 Jul 2018 | | Final Results | RNS |
| 11/06/18 | 08:00:03 | 11 Jun 2018 | | £4.3m Smart Warehouse Power Units Contracts | RNS |
| 21/05/18 | 15:15:02 | 21 May 2018 | | Issue of Equity | RNS |
| 10/05/18 | 17:46:19 | 10 May 2018 | | Holding(s) in Company | RNS |
| 30/04/18 | 08:00:06 | 30 Apr 2018 | | Total Voting Rights | RNS |
| 23/04/18 | 19:20:21 | 23 Apr 2018 | | Holding(s) in Company | RNS |
| 17/04/18 | 18:29:52 | 17 Apr 2018 | | Holding(s) in Company | RNS |
| 16/04/18 | 08:30:01 | 16 Apr 2018 | | New Power Solutions distribution franchise won | RNS |
| 16/04/18 | 08:25:04 | 16 Apr 2018 | | Director/PDMR Shareholding | RNS |
| 13/04/18 | 18:37:29 | 13 Apr 2018 | | Holding(s) in Company | RNS |
| 13/04/18 | 16:52:35 | 13 Apr 2018 | | Trading Statement | RNS |
| 12/04/18 | 08:00:05 | 12 Apr 2018 | | Trading Statement | RNS |
| 04/12/17 | 11:00:02 | 4 Dec 2017 | | Holding(s) in Company | RNS |
| 29/11/17 | 11:45:01 | 29 Nov 2017 | | Holding(s) in Company | RNS |
| 21/11/17 | 14:20:04 | 21 Nov 2017 | | Confirmation of interim dividend | RNS |
| 21/11/17 | 07:00:03 | 21 Nov 2017 | | Half-year Report | RNS |
| 23/10/17 | 15:52:58 | 23 Oct 2017 | | Holding(s) in Company | RNS |
| 23/10/17 | 08:00:02 | 23 Oct 2017 | | Trading Update & Notice of Results | RNS |
| 20/09/17 | 13:08:38 | 20 Sept 2017 | | Holding(s) in Company | RNS |
| 06/09/17 | 14:54:59 | 6 Sept 2017 | | Result of AGM | RNS |
| 07/08/17 | 10:26:52 | 7 Aug 2017 | | Holding(s) in Company | RNS |
| 24/07/17 | 11:00:01 | 24 Jul 2017 | | Holding(s) in Company | RNS |
| 04/07/17 | 08:00:05 | 4 Jul 2017 | | Final Results | RNS |
| 05/06/17 | 11:15:00 | 5 Jun 2017 | | Holding(s) in Company | RNS |
| 01/06/17 | 17:18:50 | 1 Jun 2017 | | Grant of Options | RNS |
| 15/05/17 | 08:00:11 | 15 May 2017 | | Opening of new Steatite Antennas site | RNS |
| 23/03/17 | 07:00:09 | 23 Mar 2017 | | Trading Update & Notice of Results | RNS |
| 13/03/17 | 07:00:09 | 13 Mar 2017 | | Appointment of Joint Broker | RNS |
| 22/11/16 | 07:00:07 | 22 Nov 2016 | | Half-year Report | RNS |
| 21/11/16 | 07:00:11 | 21 Nov 2016 | | Directorate Change | RNS |
| 15/11/16 | 12:05:39 | 15 Nov 2016 | | Holding(s) in Company | RNS |
| 20/10/16 | 08:00:08 | 20 Oct 2016 | | Trading Update & Notice of Results | RNS |
| 19/09/16 | 16:42:48 | 19 Sept 2016 | | Director/PDMR Shareholding | RNS |
| 13/09/16 | 17:40:30 | 13 Sept 2016 | | Result of AGM | RNS |
| 08/09/16 | 12:39:54 | 8 Sept 2016 | | Director/PDMR Shareholding | RNS |
| 18/08/16 | 08:00:11 | 18 Aug 2016 | | Exercise of Options | RNS |
| 26/07/16 | 08:00:06 | 26 Jul 2016 | | Annual Financial Report & Notice of AGM | RNS |
| 05/07/16 | 08:00:06 | 5 Jul 2016 | | Final Results | RNS |
