| Movements | $'000 | $'000 | $'000 | $'000 |
| At 30 June 2019 | | | | |
| Cost | 13 | 12,961 | 16,284 | 29,259 |
| Accumulated amortisation | - | (5,580) | - | (5,580) |
| Netbook amount | 13 | 7,381 | 16,284 | 23,678 |
| 30 June 2018 | | | | |
| Opening net book amount at 1 July 2017 | 43 | 442 | 8,053 | 8,538 |
| Additions – externally acquired | 13 | - | 5,253 | 5,266 |
| Additions – internally developed | - | - | 1,256 | 1,256 |
| Amortisation | (43) | (1,746) | - | (1,789) |
| Transfers | - | 7,563 | (7,563) | - |
| Transfer between classes | - | 744 | - | 744 |
| Disposals | - | (618) | (490) | (1,108) |
| Closing net book amount | 13 | 6,385 | 6,509 | 12,907 |
| At 30 June 2018 | | | | |
| Cost | 104 | 9,555 | 6,509 | 16,168 |
| Accumulated amortisation | (91) | (3,170) | - | (3,261) |
| Net book amount | 13 | 6,385 | 6,509 | 12,907 |