 As railways in England began to develop into a network, business people in Scotland started to think not merely of internal railways, but of eventual connection with England.When the Grand Junction Railway was authorised in 1833, to link Birmingham (and therefore London) with Manchester, it was possible to consider that railways might soon link central Scotland and the south of England.In 1835 a railway from Glasgow into Ayrshire was being actively promoted, and a survey to be commissioned from John Miller, and he proposed a route from to Ayr and Kilmarnock.