A joint venture, known as ComfortDelGro Cabcharge (CDC), was established between
ComfortDelGro (51%) and
Cabcharge Australia (49%) in October 2005 to purchase loss-making Westbus Group, which included
Westbus (both Australia & UK),
Hillsbus and Blue Ribbon from
National Express and the Bosnjak family. Blue Ribbon was rebranded
Hunter Valley Buses at the same time. After the purchase,
Westbus UK continued independently from the Westbus in Australia, despite bearing the latter's name, old logo and livery to this day. It became part of
CityFleet Networks, initially also a joint venture between ComfortDelGro and Cabcharge, and now a wholly owned subsidiary of ComfortDelGro in the United Kingdom. Cabcharge sold both of its stakes in CDC and CityFleet to ComfortDelGro in February and June 2017 respectively. In August 2006, the routes of
Baxter's Bus Lines were purchased by and absorbed into Westbus
Region 3 operations. In August 2007, Morisset Bus Service, Sugar Valley Coachlines and Toronto Bus Service were purchased and absorbed into Hunter Valley Buses. In June 2008 a bus charter division was established under the Charterplus name. In July 2008, ComfortDelGro Cabcharge planned to venture into the bus building industry, and entered a memorandum of understanding to acquire bus body builder
Custom Coaches. CDC had also planned to open a bus building plant in
Rutherford in New South Wales'
Hunter Valley, and the plant would be used as one of its bases for its bus building operations. In late August that year, CDC announced it would not proceed with the planned acquisition of Custom Coaches or the construction of the Rutherford bus building plant. Cabcharge stated that due to the
2008 financial crisis, the two CDC shareholders decided they should not proceed with the bus building business in Australia, and they would focus on their core operations. To demonstrate their "confidence in Custom Coaches", CDC placed a significant number of new orders with Custom Coaches. In November 2008, it was announced that
Kefford Corporation in Victoria would be acquired. The acquisition was finalised on 23 February 2009. The group was renamed CDC Victoria, but the names of the bus companies within the group were retained until replaced by the CDC brand in 2014. In September 2012, Deane's Transit Group comprising Deane's Buslines (renamed as
Qcity Transit) and
Transborder Express in southern
New South Wales were purchased. In August 2014, CDC purchased Blue Mountains Bus Company, which was subsequently renamed Blue Mountains Transit in December 2014. In December 2016, ComfortDelgro announced it had agreed to purchase Cabcharge's 49% stake. The sale was completed on 16 February 2017 after
Foreign Investment Review Board approval was granted. The former joint venture was then renamed ComfortDelGro Corporation Australia, still keeping the abbreviation CDC. In April 2018, ComfortDelgro acquired
Tullamarine Bus Lines in
Melbourne and integrated it into CDC Melbourne in August 2018. At the same time, it acquired National Patient Transport, one of the largest private providers of non-emergency patient transport services in Australia. In August 2018, ComfortDelgro acquired
Coastal Liner on the
Central Coast, and in September 2018,
Forest Coach Lines with operations in
Sydney, the
Mid North Coast and
North West Slopes. In November 2018, the
Buslink business was acquired with 401 buses operating in the
Northern Territory,
Queensland, New South Wales and
Victoria. In the same month, Charterplus was renamed CDC Travel. In April 2019, ComfortDelGro acquired Blanch's Bus Company and Brunswick Valley Coaches with a fleet of 48 buses and coaches in the
Northern Rivers region of New South Wales. In March 2020, these operations were rebranded to CDC Mildura and
CDC Broken Hill respectively. In October 2020, the Buslink Queensland operations were rebranded to
CDC Queensland, with Buslink Sunshine Coast and Buslink Gladstone rebranded to CDC Sunshine Coast and CDC Gladstone respectively. In July 2021, ComfortDelGro announced it has reached an agreement to acquire
Young's Bus Service which operates services in
Rockhampton, Queensland. In August 2021, ComfortDelGro announced its intention to list ComfortDelGro Australia on the
Australian Securities Exchange. In October 2021, CDC acquired a school bus contract and five buses from KA & VK Stubbs in
Narrabri, New South Wales. The school bus operation was merged into CDC's existing Forest Coach Lines business in Narrabri and Wee Waa. In July 2022, the remainder of the Buslink operations was renamed
CDC Northern Territory. In November 2022, it was announced that CDC retained and was awarded the contracts for
Sydney bus regions 4 (Hillsbus) and 14 (Forest Coach Lines) in Sydney, as well as winning the contract for region 12 (consolidated into region 14). The Hillsbus and Forest Coach Lines (in Sydney) brands were replaced by the CDC NSW brand when the new contracts for region 4 and the consolidated region 14 began in April and May 2023 respectively. In August 2023, CDC moved its national head office to the
Melbourne CBD after three years in
Malvern and a year in
Camberwell prior to that. In December 2023, CDC entered into a
scheme of arrangement to purchase its former joint venture partner
A2B Australia (which had rebranded from Cabcharge in 2018), subject to shareholder and regulatory approval. ==Operations==