In the early 1960s Bill Dineen ran a school run in Trafalgar.
In 1968 he purchased Workmen’s Comfort Coaches of Trafalgar followed by Warragul Bus Lines.
Heyfield Bus Lines was acquired circa 1984.
In June 1985 Westenport Roadlines was purchased.
In October 1990 Panorama Coaches was aquired from Don Nugent with 13 buses and coaches.
In May 1991 Hurstbridge Coaches was purchased and later merged with Panorama Coaches.
In 2002 Sandringham & Brighton Coaches was acquired.
In September 2006 McKenzie’s Tourist Services, Healesville was purchased.
In November 2011 Martyrs Bus Service. In November 2013 Cann’s Bus Lines, Corowa was purchased.
In January 2017 Snowliner Coaches, Cooma was purchased from Evans Family.
In July 2017, Cavanagh Bus Group Kempsey was purchased from the Cavanagh’s.
As at August 2020, the Dineen Group operated over 600 buses and coaches Australian Bus Fleet Lists under the following brands in Victoria and New South Wales
Berwick Bus Lines – 58
Martyrs Bus Lines, Warburton – 47
Panorama Coaches, Diamond Creek -84
Westernport Road Lines, Koo Wee Rup – 77
Sandringham & Brighton Coaches, Moorabbin – 19
McKenzie’s Tourist Services, Healesville – 50
Heyfield Bus Lines – 30
Warragul Bus Lines – 89
Cann Corowa – 87
Snowliner Coaches – 11
Cavanagh’s Bus & Coach – 56
Train 2 Bus Transit – 25
Total – 633