Clydeside Scottish was one of the shortest lived of the "new" Scottish Bus Group subsidiaries, lasting shortly under four years as a stand-alone company. Clydeside was created in preparation for the deregulation of the British bus industry in 1986, and eventual privatisation of the state-owned Scottish Bus Group. A bright red and yellow livery was introduced for the fleet, and a fleet name displayed in a style different from the corporate SBG look. On deregulation, the company launched a network of services in the city of Glasgow, competing against the city operator Strathclyde Buses. A large number of two-person operated open-platform AEC Routemaster buses were purchased from London Transport for these services, which gave the company the advantage of giving change without the buses having to linger at bus stops. The Routemasters operated on services into Paisley, Renfrew and Johnstone. Strathclyde Buses retaliated against the competition, however, by introducing routes beyond the city boundary and into Clydeside's operating territory. A number of innovative marketing initiatives were introduced including ticketing, advertising, staff motivation and production of a story book "Rodney The Routemaster comes to Town" aimed at children. While competing with the much larger Strathclyde Buses, Clydeside suffered an explosion of new operators in Paisley and in particular, Greenock. Clydeside found it increasingly difficult to compete against so many operators with much smaller operating costs. In May 1989 it was merged with Western Scottish. The Clydeside name was retained by Western as a trading name, but its red and yellow livery was replaced by Western black, white and red.
Successor companies
The former Clydeside operations, with the exception of those on Bute, passed to a new company, Clydeside 2000 plc, on the privatisation of Western Scottish in October 1991. Clydeside's new management and employees took a 76% stake in the new company, with Luton & District purchasing the remainder. The company scaled down its Glasgow operations, and the depots at Largs, Thornliebank and Paisley closed in the following three years. Clydeside 2000 was taken over by British Bus in November 1994 ; British Bus was subsequently acquired by the Cowie Group, later to become Arriva. Clydeside was renamed Arriva Scotland West, trading at the time as Arriva serving Scotland. Arriva expanded its Scottish operations with the purchase of McGill's Bus Service of Barrhead and Ashton Coaches of Greenock, although the Greenock operations of Arriva Scotland West were later demerged and sold to local management as McGill's Bus Services. In December 2011 it was announced that Arriva had agreed a deal to sell its remaining Scottish operations to McGill's. The sale was completed in March 2012.