Despite experiencing heavy and sustained competition on the lucrative city services in Perth, Strathtay Scottish managed to remain profitable on the run up to privatisation, and in June 1991 was sold to Barnsley-based Yorkshire Traction Ltd for £1.9m. Now trading simply as Strathtay Buses, the new owners established and maintained a working relationship with Stagecoach around Perth, even jointly operating the trunk service between Dundee and Perth with the national operator, while the remainder of the operations remained largely unchanged from privatisation.