Sunbury Bus Service was formed by Richard Baird and Don McKenzie in March 1980 following the purchase of the business of WJ Treweek.[2] It is today part of the Donric Group. In November 2025, It will commence operating services to Canberra as a contractor to FlixBus.[3]
Fleet
As at February 2023, the fleet consisted of 108 buses and coaches.[1] Operator livery is white with red & black stripes while newer route buses have the PTV livery.