| 11/03/20 | 07:05:01 | 11 Mar 2020 | | Board Change | RNS |
| 11/03/20 | 07:00:04 | 11 Mar 2020 | | 2019 Preliminary Results | RNS |
| 07/02/20 | 17:35:23 | 7 Feb 2020 | | Director Declaration | RNS |
| 13/11/19 | 07:00:04 | 13 Nov 2019 | | Trading Update | RNS |
| 10/09/19 | 16:30:02 | 10 Sept 2019 | | Change of Director Details | RNS |
| 04/09/19 | 11:00:01 | 4 Sept 2019 | | Board Change | RNS |
| 21/08/19 | 15:49:29 | 21 Aug 2019 | | Holding(s) in Company | RNS |
| 14/08/19 | 10:02:37 | 14 Aug 2019 | | Holding(s) in Company | RNS |
| 09/08/19 | 11:27:14 | 9 Aug 2019 | | Director/PDMR Shareholding | RNS |
| 08/08/19 | 17:26:48 | 8 Aug 2019 | | Director/PDMR Shareholding | RNS |
| 07/08/19 | 08:00:03 | 7 Aug 2019 | | Half-year Report | RNS |
| 01/08/19 | 18:41:19 | 1 Aug 2019 | | Change of Adviser | RNS |
| 28/05/19 | 16:08:58 | 28 May 2019 | | Holding(s) in Company | RNS |
| 17/05/19 | 17:16:40 | 17 May 2019 | | Director/PDMR Shareholding | RNS |
| 16/05/19 | 17:12:06 | 16 May 2019 | | Holding(s) in Company | RNS |
| 15/05/19 | 18:14:47 | 15 May 2019 | | Result of AGM | RNS |
| 15/05/19 | 08:00:11 | 15 May 2019 | | AGM Statement - Trading Update | RNS |
| 13/05/19 | 15:45:08 | 13 May 2019 | | Completion of Acquisition | RNS |
| 30/04/19 | 10:21:27 | 30 Apr 2019 | | Change of Director Details | RNS |
| 25/04/19 | 09:28:22 | 25 Apr 2019 | | Change of Director Details | RNS |
| 11/04/19 | 15:36:34 | 11 Apr 2019 | | Director/PDMR Shareholding | RNS |
| 15/03/19 | 11:25:02 | 15 Mar 2019 | | Acquisition | RNS |
| 07/03/19 | 07:00:07 | 7 Mar 2019 | | Final Results | RNS |
| 01/03/19 | 15:04:01 | 1 Mar 2019 | | Board Appointment | RNS |
| 18/02/19 | 07:00:08 | 18 Feb 2019 | | Exclusive negotiations to acquire Thermocoax | RNS |
| 16/01/19 | 16:20:23 | 16 Jan 2019 | | Change of Director Details | RNS |
| 03/12/18 | 07:00:06 | 3 Dec 2018 | | Disposal | RNS |
| 15/11/18 | 07:00:07 | 15 Nov 2018 | | Trading Update | RNS |
| 31/10/18 | 16:23:41 | 31 Oct 2018 | | Director/PDMR Shareholding | RNS |
| 12/10/18 | 18:34:08 | 12 Oct 2018 | | Director/PDMR Shareholding | RNS |
| 26/09/18 | 08:30:02 | 26 Sept 2018 | | Change of Director Details | RNS |
| 23/08/18 | 17:55:07 | 23 Aug 2018 | | Holding(s) in Company | RNS |
| 09/08/18 | 16:07:09 | 9 Aug 2018 | | Director/PDMR Shareholding | RNS |
| 31/07/18 | 11:22:10 | 31 Jul 2018 | | Holding(s) in Company | RNS |
| 25/07/18 | 10:46:58 | 25 Jul 2018 | | Change of Director Details | RNS |
| 20/07/18 | 11:00:01 | 20 Jul 2018 | | Executive Director Promotion | RNS |
| 11/06/18 | 17:26:04 | 11 Jun 2018 | | Holding(s) in Company | RNS |
| 31/05/18 | 09:12:08 | 31 May 2018 | | Director/PDMR Shareholding | RNS |
| 31/05/18 | 08:00:04 | 31 May 2018 | | Capital Markets Day | RNS |
| 17/05/18 | 10:26:13 | 17 May 2018 | | Director/PDMR Shareholding | RNS |
| 15/05/18 | 17:55:41 | 15 May 2018 | | Result of AGM | RNS |
| 15/05/18 | 08:00:03 | 15 May 2018 | | AGM Statement - Trading Update | RNS |
| 25/04/18 | 17:27:20 | 25 Apr 2018 | | Director/PDMR Shareholding | RNS |
| 06/04/18 | 16:32:37 | 6 Apr 2018 | | Director/PDMR Shareholding | RNS |
| 04/04/18 | 17:17:32 | 4 Apr 2018 | | Director/PDMR Shareholding | RNS |
| 15/03/18 | 07:00:04 | 15 Mar 2018 | | 2017 Preliminary Results | RNS |
| 06/03/18 | 07:00:06 | 6 Mar 2018 | | Board Appointment | RNS |
| 14/02/18 | 07:00:04 | 14 Feb 2018 | | Board Succession Changes | RNS |
| 06/02/18 | 07:30:00 | 6 Feb 2018 | | Change of Director Details | RNS |
| 20/12/17 | 09:07:35 | 20 Dec 2017 | | Change of Director Details | RNS |
