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MTR Corporation Limited is a majority government-owned public transport operator and property developer in Hong Kong which operates the Mass Transit Railway, the most popular public transport network in Hong Kong. It is listed on the Hong Kong Exchange and is a component of the Hang Seng Index. The MTR additionally invests in railways across different parts of the world, including franchised contracts to operate rapid transit systems in London, Stockholm, Beijing, Hangzhou, Macao, Shenzhen, Sydney, and a suburban rail system in Melbourne.

Scottish Citylink is a long-distance express coach operator in Scotland and Ireland and formerly England. The company was formed as a subsidiary of Scottish Transport Group in March 1985. It is operated as a 63/37 joint venture between ComfortDelGro and Stagecoach.

ComfortDelGro Corporation Limited, commonly known as ComfortDelGro, is a multi-national transport group based in Singapore. It is listed on the Singapore Exchange that operates more than 40,000 vehicles across 12 countries. It was formed on 29 March 2003 through a merger of Singaporean land transport companies Comfort Group and DelGro Corporation.

Metroline is a bus company operating bus services in Greater London and Hertfordshire. It is a subsidiary of ComfortDelGro. It also operates bus services under contract to Transport for London.

Westbus was an Australian bus and coach operator that operated bus services in Western Sydney from 1955 until October 2013. Founded by the Bosnjak family, it later became a subsidiary of National Express and later ComfortDelGro Cabcharge.

Red Bus CDC NSW, formerly Red Bus Services, is an Australian bus company operating route bus services on the New South Wales Central Coast.

Hillsbus was an Australian bus company that operated services in the Hills District of Sydney. Founded in 2004 when National Express merged its Glenorie Bus Company and Westbus subsidiaries, it was later part of ComfortDelGro Australia. In early 2023, the Hillsbus brand was replaced by ComfortDelGro's CDC NSW brand.

Transdev NSW was a bus operator in the northern, southern and western suburbs of Sydney, Australia. It was a subsidiary of Transdev.

ComfortDelGro Australia is a major Australian public transport company and a wholly-owned subsidiary of Singapore-listed company ComfortDelGro. Founded in October 2005 as ComfortDelGro Cabcharge, a joint venture between ComfortDelGro (51%) and Australian-listed Cabcharge (49%), it became fully owned by ComfortDelGro in 2017. It operates public transport, taxi and patient transport services nationwide across Australia, except in the states of Tasmania and South Australia.

London Overground Rail Operations Limited was a train operating company contracted to operate the London Overground train service on the National Rail network, under the franchise control of Transport for London. The company was a 50/50 joint venture between Arriva UK Trains and MTR Corporation.

CDC Northern Territory is a bus operator providing services in Alice Springs, Bathchelor, Darwin, Palmerston, Jabiru and Humpty Doo. It is the largest operator in the Northern Territory and the sole operator of the Darwinbus network.

A2B Australia is an Australian based taxi operator.

Auckland One Rail is a train operator that commenced operating services under contract to Auckland Transport in January 2022. 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.

CDC NSW is a bus operator in New South Wales, Australia. It is an umbrella brand of ComfortDelGro Australia established in 2017 to cover the latter's New South Wales operations, some of which had been owned by ComfortDelGro since 2005. It was subsequently established as a legal entity (company) in 2019. Beginning from 2023, its Hillsbus, Forest Coach Lines and Blanch's Bus Company brands were phased out in favour of the CDC NSW brand.