| Price Monitoring Extension | 21/11/18 | 09:00 | RNS |
| Proposed Sale of RTLS SmartSpace for up to £35.0m | 21/11/18 | 07:00 | RNS |
| Second Price Monitoring Extn | 20/11/18 | 14:05 | RNS |
| Price Monitoring Extension | 20/11/18 | 14:00 | RNS |
| Holding(s) in Company | 06/11/18 | 16:28 | RNS |
| Half-year Report | 27/09/18 | 07:00 | RNS |
| Strategy/Company/Ops Update | 30/08/18 | 07:00 | RNS |
| Trading Update | 07/08/18 | 07:00 | RNS |
| Block listing Return | 02/07/18 | 07:00 | RNS |
| Second Price Monitoring Extn | 19/06/18 | 09:05 | RNS |
| Price Monitoring Extension | 19/06/18 | 09:00 | RNS |
| Major SmartSpace contract for military training | 19/06/18 | 07:00 | RNS |
| Holding(s) in Company | 30/05/18 | 14:09 | RNS |
| Result of AGM | 26/04/18 | 11:16 | RNS |
| Director/PDMR Shareholding | 16/04/18 | 15:50 | RNS |