| 19/04/17 | 16:35:44 | 19 Apr 2017 | | Notification of Director's Interest in Shares | RNS |
| 07/04/17 | 14:12:59 | 7 Apr 2017 | | Director/PDMR Shareholding | RNS |
| 22/03/17 | 07:00:06 | 22 Mar 2017 | | Acquisition of Rotos 360 Limited | RNS |
| 10/03/17 | 11:39:30 | 10 Mar 2017 | | Notification of Directors' Interest in Shares | RNS |
| 10/03/17 | 11:38:14 | 10 Mar 2017 | | Notification of Directors' Interest in Shares | RNS |
| 02/03/17 | 14:51:38 | 2 Mar 2017 | | Director/PDMR Shareholding | RNS |
| 01/03/17 | 07:00:29 | 1 Mar 2017 | | Saturation Diving Contract | RNS |
| 01/03/17 | 07:00:19 | 1 Mar 2017 | | Final Results | RNS |
| 16/12/16 | 09:00:02 | 16 Dec 2016 | | Block listing Six Monthly Return | RNS |
| 07/12/16 | 12:36:53 | 7 Dec 2016 | | Director/PDMR Shareholding | RNS |
| 22/11/16 | 08:30:05 | 22 Nov 2016 | | Saturation Diving Contract Award | RNS |
| 22/11/16 | 08:30:02 | 22 Nov 2016 | | Trading Update | RNS |
| 20/10/16 | 17:37:35 | 20 Oct 2016 | | Holding(s) in Company | RNS |
| 23/09/16 | 11:30:54 | 23 Sept 2016 | | Director/PDMR Shareholding | RNS |
| 07/09/16 | 16:10:03 | 7 Sept 2016 | | Director/PDMR Shareholding | RNS |
| 31/08/16 | 08:00:09 | 31 Aug 2016 | | Half Year Results 2016 | RNS |
| 11/08/16 | 08:00:06 | 11 Aug 2016 | | Acquisition of Hughes Sub Surface Engineering | RNS |
| 10/08/16 | 08:00:07 | 10 Aug 2016 | | Corporate Stockbroker Appointment | RNS |
| 01/08/16 | 08:00:15 | 1 Aug 2016 | | Acquisition of Lexmar | RNS |
| 06/07/16 | 16:57:33 | 6 Jul 2016 | | Holding(s) in Company | RNS |
| 17/06/16 | 08:00:10 | 17 Jun 2016 | | Block listing Interim Review | RNS |
| 08/06/16 | 16:20:29 | 8 Jun 2016 | | Director/PDMR Shareholding | RNS |
| 06/06/16 | 18:24:53 | 6 Jun 2016 | | Holding(s) in Company | RNS |
| 03/06/16 | 08:00:08 | 3 Jun 2016 | | Acquisition | RNS |
| 23/05/16 | 17:46:12 | 23 May 2016 | | Holding(s) in Company | RNS |
| 11/05/16 | 17:53:07 | 11 May 2016 | | Notification of Director's Interest in Shares | RNS |
| 03/05/16 | 08:00:19 | 3 May 2016 | | Total Voting Rights and Share Capital | RNS |
| 29/04/16 | 11:33:32 | 29 Apr 2016 | | Results of AGM | RNS |
| 28/04/16 | 08:00:06 | 28 Apr 2016 | | Trading Update and AGM Statement | RNS |
| 26/04/16 | 08:00:07 | 26 Apr 2016 | | Winfrith reactor decommissioning contract | RNS |
| 20/04/16 | 17:46:06 | 20 Apr 2016 | | Holding(s) in Company | RNS |
| 23/03/16 | 12:50:03 | 23 Mar 2016 | | £193m Indian Navy Contract | RNS |
| 21/03/16 | 16:31:59 | 21 Mar 2016 | | Director/PDMR Shareholding | RNS |
| 03/03/16 | 16:00:01 | 3 Mar 2016 | | Director/PDMR Shareholding | RNS |
| 03/03/16 | 13:30:49 | 3 Mar 2016 | | Corrections to FY Results published 2 March 2016 | RNS |
| 02/03/16 | 07:00:07 | 2 Mar 2016 | | Final Results | RNS |
| 25/02/16 | 07:00:05 | 25 Feb 2016 | | Galloper Wind Farm Ltd Contract Award | RNS |
| 17/12/15 | 07:00:11 | 17 Dec 2015 | | Blocklisting Six Monthly Return | RNS |
| 10/12/15 | 12:47:10 | 10 Dec 2015 | | Holding(s) in Company | RNS |
| 02/12/15 | 17:27:01 | 2 Dec 2015 | | Director Shareholding | RNS |
| 26/11/15 | 07:00:06 | 26 Nov 2015 | | Trading Update | RNS |
| 11/11/15 | 16:36:18 | 11 Nov 2015 | | Notification of Director's Interest in Shares | RNS |
| 03/11/15 | 11:28:59 | 3 Nov 2015 | | Nominations Committee Appointment | RNS |
| 27/10/15 | 17:06:43 | 27 Oct 2015 | | Holding(s) in Company | RNS |
| 07/10/15 | 16:46:31 | 7 Oct 2015 | | Holding(s) in Company | RNS |
| 01/10/15 | 11:51:47 | 1 Oct 2015 | | Holding(s) in Company | RNS |
| 23/09/15 | 17:18:03 | 23 Sept 2015 | | Holding(s) in Company | RNS |
| 25/08/15 | 08:00:31 | 25 Aug 2015 | | Half Yearly Report | RNS |
| 20/08/15 | 16:56:43 | 20 Aug 2015 | | Holding(s) in Company | RNS |
| 19/08/15 | 10:19:14 | 19 Aug 2015 | | Holding(s) in Company | RNS |
