| 30/01/19 | 12:02:31 | 30 Jan 2019 | | Price Monitoring Extension | RNS |
| 15/01/19 | 07:00:02 | 15 Jan 2019 | | Full Year Trading Update and Notice of Results | RNS |
| 08/01/19 | 12:09:40 | 8 Jan 2019 | | Home Office awards £1bn revenue contracts | RNS |
| 19/12/18 | 07:00:04 | 19 Dec 2018 | | Board changes | RNS |
| 14/12/18 | 12:02:46 | 14 Dec 2018 | | Price Monitoring Extension | RNS |
| 19/11/18 | 13:29:05 | 19 Nov 2018 | | Results of placing | RNS |
| 19/11/18 | 07:01:15 | 19 Nov 2018 | | Proposed placing and acquisition | RNS |
| 14/08/18 | 08:00:06 | 14 Aug 2018 | | Interim Results | RNS |
| 24/07/18 | 08:00:09 | 24 Jul 2018 | | Withdrawal of Requisition for a General Meeting | RNS |
| 12/07/18 | 08:00:06 | 12 Jul 2018 | | Update on Requisition of General Meeting | RNS |
| 06/07/18 | 17:11:39 | 6 Jul 2018 | | Planned Board Succession | RNS |
| 05/07/18 | 09:12:48 | 5 Jul 2018 | | Requisition of General Meeting | RNS |
| 20/06/18 | 08:00:03 | 20 Jun 2018 | | Pre-Close Trading Update | RNS |
| 12/06/18 | 15:28:16 | 12 Jun 2018 | | Director Appointment | RNS |
| 07/06/18 | 16:30:08 | 7 Jun 2018 | | Result of AGM | RNS |
| 08/05/18 | 08:00:13 | 8 May 2018 | | Notice of Annual General Meeting | RNS |
| 03/04/18 | 09:49:44 | 3 Apr 2018 | | Total Voting Rights | RNS |
| 20/03/18 | 07:00:06 | 20 Mar 2018 | | Final Results | RNS |
| 22/01/18 | 07:00:05 | 22 Jan 2018 | | Notification of Final Results | RNS |
| 08/01/18 | 13:27:36 | 8 Jan 2018 | | Block Listing Six Monthly Return | RNS |
| 03/01/18 | 07:29:58 | 3 Jan 2018 | | Total Voting Rights | RNS |
| 12/12/17 | 07:00:05 | 12 Dec 2017 | | Notification of Major Holdings | RNS |
| 05/12/17 | 07:00:07 | 5 Dec 2017 | | Trading Update | RNS |
| 07/11/17 | 16:05:01 | 7 Nov 2017 | | Director/PDMR Shareholding | RNS |
| 07/11/17 | 12:07:56 | 7 Nov 2017 | | Second Price Monitoring Extn | RNS |
| 07/11/17 | 12:02:33 | 7 Nov 2017 | | Price Monitoring Extension | RNS |
| 02/11/17 | 07:00:05 | 2 Nov 2017 | | Total Voting Rights | RNS |
| 20/10/17 | 15:30:01 | 20 Oct 2017 | | Director change | RNS |
| 05/10/17 | 08:00:06 | 5 Oct 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 05/10/17 | 08:00:05 | 5 Oct 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 02/10/17 | 16:26:21 | 2 Oct 2017 | | Total Voting Rights | RNS |
| 25/09/17 | 08:00:07 | 25 Sept 2017 | | Director appointment | RNS |
| 07/09/17 | 18:45:01 | 7 Sept 2017 | | Notification of Major Holdings | RNS |
| 01/09/17 | 08:00:03 | 1 Sept 2017 | | Total Voting Rights | RNS |
| 15/08/17 | 08:00:03 | 15 Aug 2017 | | Interim Results | RNS |
| 02/08/17 | 08:00:10 | 2 Aug 2017 | | NOTIFICATION OF MAJOR HOLDINGS | RNS |
| 02/08/17 | 08:00:10 | 2 Aug 2017 | | NOTIFICATION OF MAJOR HOLDINGS | RNS |
| 01/08/17 | 08:00:07 | 1 Aug 2017 | | Total Voting Rights | RNS |
| 04/07/17 | 10:26:49 | 4 Jul 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 27/06/17 | 08:00:02 | 27 Jun 2017 | | Pre-Close Trading Update | RNS |
| 19/06/17 | 08:00:05 | 19 Jun 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 08/06/17 | 08:00:06 | 8 Jun 2017 | | Board changes | RNS |
| 07/06/17 | 13:45:01 | 7 Jun 2017 | | Result of AGM | RNS |
| 06/06/17 | 16:00:02 | 6 Jun 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 02/06/17 | 08:05:01 | 2 Jun 2017 | | Total Voting Rights | RNS |
| 18/05/17 | 08:00:18 | 18 May 2017 | | TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES | RNS |
| 10/04/17 | 10:40:04 | 10 Apr 2017 | | 2016 Annual Financial Report, Notice of 2017 AGM | RNS |
| 31/03/17 | 17:25:42 | 31 Mar 2017 | | Director/PDMR Shareholding | RNS |
| 31/03/17 | 08:00:09 | 31 Mar 2017 | | Total Voting Rights | RNS |
| 24/03/17 | 15:00:02 | 24 Mar 2017 | | Director/PDMR Shareholding | RNS |
