Bristol Omnibus Co
1957 Bristol Tramways and Carriage Co Ltd was renamed Bristol Omnibus Co Ltd when the remainder of the company was incorporated in Bristol Commercial Vehicles.
1969 Bristol Omnibus Co was taken into the National Bus Co
1989 Acquired by Badgerline Holdings
1995 Badgerline Group plc and GRT Bus Group plc merged under FirstBus plc
1997 FirstBus plc was renamed FirstGroup plc
1999 Bristol Omnibus Co was renamed First Bristol Buses Ltd