The
Chester and Holyhead Railway completed its main line in 1850, transforming the transport environment in North Wales; however its main focus at opening was the Irish Mail traffic rather than local traffic. It allied itself with routes to London via
Crewe, and shortly merged with other lines to form the London and North Western Railway, in 1858. The
Shrewsbury and Chester Railway had already opened in 1848; it was not aligned to larger lines at first, but in time it became aligned to the Great Western Railway, so that the two railways were in competition.
Denbigh was an important regional centre, and in 1856 the
Vale of Clwyd Railway was authorised by the
Vale of Clwyd Railway Act 1856 (
19 & 20 Vict. c. xlv) to build from Rhyl to Denbigh. Relations with the LNWR at Rhyl were not completely cordial. On 1 August 1859 the
Vale of Llangollen Railway was authorised by the
Vale of Llangollen Railway Act 1859 (
22 & 23 Vict. c. lxiv) to build from a junction south of
Ruabon, on the Shrewsbury and Chester line, now in the control of the Great Western Railway. This branch was definitely in the GWR camp, and the GWR was attracted by the possibility of reaching Rhyl. If the gap between Llangollen and Denbigh could be closed, the GWR would achieve its aim; the LNWR made efforts to frustrate that ambition. The following year two ostensibly independent lines were authorised, the
Llangollen and Corwen Railway by the
Llangollen and Corwen Railway Act 1860 (
23 & 24 Vict. c. clxxxviii) and, on 23 July 1860, the Denbigh, Ruthin and Corwen Railway by the '''''' (
23 & 24 Vict. c. clxiv). ==Opening, in stages==