 It linked the Pollok and Govan Railway with the Glasgow and Paisley Joint Railway, the Glasgow, Paisley, Kilmarnock and Ayr Railway, the Glasgow, Barrhead and Kilmarnock Joint Railway and the Clydesdale Junction Railway.On 24 July 1854 parts of the line were vested with the Caledonian Railway; and final amalgamation occurred on 29 June 1865.In the 1921 Railway Grouping it became part of the London, Midland and Scottish Railway (LMS).