Interline Bus Services is a local family company with 50 years experience in the provision of bus services in Campbelltown and Liverpool. Along with Busabout Bus Service, Interline Bus Service operates scheduled bus services in Sydney Metropolitan Bus Region 2.

Operating local bus routes, school bus services and charter buses in South West Sydney, Interline Bus Service is an accredited Regular Passenger and Tourist Bus Service Operator with the New South Wales Ministry of Transport (Accreditation No. 10291).