 The purchase price was £34,000.The line was not physically connected to the GPK&AR and was of a different track gauge; having acquired it the GPK&AR advertised it for lease in November 1847.In 1850 the Glasgow, Paisley Kilmarnock and Ayr Railway absorbed the Glasgow, Dumfries and Carlisle Railway and was renamed the Glasgow and South Western Railway (G&SWR).