Highland Scottish Omnibuses Ltd was formed as a bus operating subsidiary of the Scottish Transport Group in June 1985 from Highland Omnibuses Ltd, and operated until October 1995 when the company was split into two - Highland Bus & Coach and Highland Country Buses. The companies have since remerged and operate today as Highland Country Buses. It is now Stagecoach Highlands.

The Scottish Bus Group (SBG) was a state-owned group of bus operators covering the whole of mainland Scotland.