ChesterBus[1] was an English municipal bus company operating services in the city of Chester and across the county of Cheshire.

To comply with the Transport Act 1985, the bus operation was transferred to a separate company in 1986.

[1] It continued to trade as Chester City Transport until rebranded as ChesterBus in April 2005.

[3] In October 2006, Arriva North West & Wales registered a network of services to commence in January 2007, which duplicated a number of ChesterBus's routes.

The claim centred on the allegation that Arriva were abusing a dominant position, but in a judgement dated 15 June 2007, it was held that Arriva had not been demonstrated to hold a dominant position, and the claim was therefore dismissed.