| Total Voting Rights | 06/03/19 | 07:00 | RNS |
| Block listing extension | 19/02/19 | 07:00 | RNS |
| Statement re Chairman | 14/02/19 | 07:00 | RNS |
| Trading update | 31/01/19 | 07:00 | RNS |
| Block listing six monthly return | 02/01/19 | 07:00 | RNS |
| Statement re sale of division | 31/12/18 | 10:09 | RNS |
| Update on Sale of RTLS SmartSpace | 18/12/18 | 07:00 | RNS |
| Result of General Meeting | 13/12/18 | 09:58 | RNS |
| Holding(s) in Company | 23/11/18 | 13:51 | RNS |
| Holding(s) in Company | 23/11/18 | 13:10 | RNS |
| Second Price Monitoring Extn | 21/11/18 | 09:05 | RNS |
| 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 |