| Operating revenue | 426.01a | 395.99a |
| Operating costs | -407.36a | -378.39a |
| Net operating margin | 18.65a | 17.6a |
| Operating expenses | — | — |
| Selling expenses | -7.05a | -7.28a |
| General and administrative expenses | -1.12a | -1.15a |
| Impairment loss (impairment gain and reversal of impairment loss) determined in accordance with IFRS 9 | -0.46a | -0.54a |
| Total operating expenses | -8.63a | -8.96a |
| Operating profit | 10.02a | 8.63a |
| Non-operating income and expenses | — | — |
| Interest income | 1.2a | 0.82a |
| Other income | 1.26a | 1.33a |
| Other gains and losses | 0.2a | 0.19a |
| Finance costs | -2a | -2.03a |
| Share of profit of associates and joint ventures accounted for using equity method | 1.67a | 1.57a |
| Total non-operating income and expenses | 2.33a | 1.88a |
| Profit before income tax | 12.35a | 10.52a |
| Income tax expense | -2.42a | -2.64a |
| Profit for the year | 9.93a | 7.88a |