| 01/08/18 | 15:34:26 | 1 Aug 2018 | | Additional Listing | RNS |
| 23/07/18 | 16:51:19 | 23 Jul 2018 | | Block listing Interim Review | RNS |
| 17/07/18 | 14:44:35 | 17 Jul 2018 | | Holding(s) in Company | RNS |
| 05/07/18 | 17:13:46 | 5 Jul 2018 | | Director/PDMR Shareholding | RNS |
| 08/06/18 | 18:15:23 | 8 Jun 2018 | | Director/PDMR Shareholding | RNS |
| 06/06/18 | 18:10:19 | 6 Jun 2018 | | Director/PDMR Shareholding | RNS |
| 06/06/18 | 16:54:07 | 6 Jun 2018 | | Total Voting Rights | RNS |
| 17/05/18 | 15:44:05 | 17 May 2018 | | Result of AGM | RNS |
| 09/05/18 | 08:00:08 | 9 May 2018 | | Acquisition of Work Area Protection Corp. | RNS |
| 04/05/18 | 10:36:34 | 4 May 2018 | | Total Voting Rights | RNS |
| 13/04/18 | 08:00:02 | 13 Apr 2018 | | Annual Report and Notice of Annual General Meeting | RNS |
| 06/04/18 | 10:33:02 | 6 Apr 2018 | | Total Voting Rights | RNS |
| 15/03/18 | 13:11:57 | 15 Mar 2018 | | Director/PDMR Shareholding | RNS |
| 12/03/18 | 17:23:48 | 12 Mar 2018 | | Director/PDMR Shareholding | RNS |
| 07/03/18 | 07:00:04 | 7 Mar 2018 | | Final Results | RNS |
| 06/03/18 | 07:00:03 | 6 Mar 2018 | | Total Voting Rights | RNS |
| 05/02/18 | 16:14:34 | 5 Feb 2018 | | Total Voting Rights | RNS |
| 15/01/18 | 16:17:01 | 15 Jan 2018 | | Block listing Six Monthly Return | RNS |
| 08/01/18 | 14:19:45 | 8 Jan 2018 | | Director/PDMR Shareholding | RNS |
| 03/01/18 | 14:34:12 | 3 Jan 2018 | | Total Voting Rights | RNS |
| 20/12/17 | 17:33:56 | 20 Dec 2017 | | Transaction in Own Shares | RNS |
| 04/12/17 | 17:56:30 | 4 Dec 2017 | | Total Voting Rights | RNS |
| 22/11/17 | 16:06:49 | 22 Nov 2017 | | Director/PDMR Shareholding | RNS |
| 22/11/17 | 07:00:02 | 22 Nov 2017 | | Trading Statement | RNS |
| 01/11/17 | 10:10:44 | 1 Nov 2017 | | Total Voting Rights | RNS |
| 09/10/17 | 12:19:56 | 9 Oct 2017 | | Director/PDMR Shareholding | RNS |
| 03/10/17 | 08:00:04 | 3 Oct 2017 | | Board Appointment | RNS |
| 02/10/17 | 16:24:57 | 2 Oct 2017 | | Total Voting Rights | RNS |
| 25/09/17 | 08:00:06 | 25 Sept 2017 | | Holding(s) in Company | RNS |
| 04/09/17 | 15:10:09 | 4 Sept 2017 | | Total Voting Rights | RNS |
| 01/09/17 | 14:35:27 | 1 Sept 2017 | | Director/PDMR Shareholding | RNS |
| 17/08/17 | 16:16:16 | 17 Aug 2017 | | Holding(s) in Company | RNS |
| 10/08/17 | 08:00:04 | 10 Aug 2017 | | Half Year Results | RNS |
| 02/08/17 | 16:30:12 | 2 Aug 2017 | | Holding(s) in Company | RNS |
| 02/08/17 | 16:14:25 | 2 Aug 2017 | | Total Voting Rights | RNS |
| 27/07/17 | 11:08:12 | 27 Jul 2017 | | Holding(s) in Company | RNS |
| 18/07/17 | 16:40:20 | 18 Jul 2017 | | Block Listing Six Monthly Return | RNS |
| 05/07/17 | 10:55:59 | 5 Jul 2017 | | Director/PDMR Shareholding | RNS |
| 03/07/17 | 17:36:22 | 3 Jul 2017 | | Total Voting Rights | RNS |
| 23/06/17 | 15:53:18 | 23 Jun 2017 | | Director/PDMR Shareholding | RNS |
| 19/06/17 | 16:03:05 | 19 Jun 2017 | | Notice of Results | RNS |
| 16/05/17 | 18:13:48 | 16 May 2017 | | Director/PDMR Shareholding | RNS |
| 11/05/17 | 15:25:11 | 11 May 2017 | | Result of AGM | RNS |
| 11/05/17 | 08:00:14 | 11 May 2017 | | Trading Update | RNS |
| 02/05/17 | 19:12:17 | 2 May 2017 | | Total Voting Rights | RNS |
| 20/04/17 | 17:34:33 | 20 Apr 2017 | | Posting Annual Report and Notice of AGM | RNS |
| 03/04/17 | 17:48:29 | 3 Apr 2017 | | Total Voting Rights | RNS |
| 21/03/17 | 15:52:41 | 21 Mar 2017 | | Total Voting Rights | RNS |
| 17/03/17 | 13:43:26 | 17 Mar 2017 | | Director/PDMR Shareholding | RNS |
| 08/03/17 | 07:00:11 | 8 Mar 2017 | | Board Changes | RNS |
