| Michael Strafford|
| South Yorkshire|
M A S Special Engineering Limited, trading as MASS Brightbus or simply BrightBus, is a bus operator in South Yorkshire.
BrightBus was founded in May 1998 by Michael Strafford as an engineering business, performing contract maintenance for other operators. It also specialised in the conversion of buses for non-passenger use. It then diversified into the operation of school bus services.
Between 2001 and 2005, Brightbus, then known as Mass Transit, had a substantial presence in Lincolnshire, following the acquisition of the bus operations of Applebys Coaches, Reliance Travel of Great Gonerby and the Grantham depot of RoadCar. The Grantham operation failed under Mass ownership and was sold to Centrebus, and the Lincoln area operations to Dunn-Line in 2005.
In 2004 the company also purchased the long established Leon Motors of Finningley that was formed in 1922 and operated buses in Doncaster. By 2008 the company's stage-carriage work passed to First South Yorkshire and the remaining operations were integrated into the main BrightBus depot at North Anston.
As at May 2015, BrightBus operated a fleet of 73 buses, primarily English built double deckers repatriated from Hong Kong.