It is a 50/50 joint venture owned by Singapore-based ComfortDelGro and Australian-based UGL Rail.

The operation is the first overseas heavy rail venture by a Singapore company, as well as ComfortDelGro's first in New Zealand.

Officers of the business are Martin Kearney (CEO), Gavin Panter (COO) and TBC (CFO).

[1] On 27 August 2021, Auckland One Rail (AOR) was awarded an eight-year contract by Auckland Transport to operate the Auckland suburban rail network, beating a consortium of Transdev, John Holland and CAF.

[3][4] The contract is worth around $NZ 130m/yr over an initial 8-year term, and the venture will take over responsibility for train maintenance from 2025.