York main line The authorised network of the GNR had included the line from Doncaster to York. The
Lancashire and Yorkshire Railway (L&YR) was building from Knottingley to a junction at Askern, near the present-day Shaftholme Junction north of Doncaster, and mutual running powers had been agreed. The line was opened to the public on 6 June 1848, between Knottingley and Askern. This was extended on 7 June 1848 over the GNR to Stockbridge, a place on the Bentley Road between Askern and Doncaster. The GNR stretch amounted to 2 miles 45 chains. Stockbridge was later renamed Arksey. The GNR further extended southwards to a temporary station immediately north of the River Don at Doncaster; it opened on the following 5 August in time for the St Leger race meeting.
West Yorkshire It was a priority for the GNR to get access to the great manufacturing towns of West Yorkshire, to which it had been denied its own connection in Parliament. Leeds was the first to be reached. A Central station at Leeds was authorised on 22 July 1848. It was joint with three other companies, and GNR trains first reached it on 1 October 1848. The
South Yorkshire, Doncaster and Goole Railway opened its line from Doncaster to Barnsley on 1 January 1851. The GNR had running powers over the line, and started running passenger trains to Barnsley, and mineral trains to and from Horbury. On 1 August 1854, the independent
Leeds, Bradford and Halifax Junction Railway (LB&HJR) opened its line between Leeds and Bowling Junction, close to Bradford, where it made a connection with the L&YR. The had running powers over the L&YR to Halifax, and the GNR were granted running powers over this line, so the GNR got access to Bradford and Halifax. Another independent railway, the
Bradford, Wakefield and Leeds Railway (BW&LR) opened its line between Wakefield (the present-day Kirkgate station) and junctions near Leeds, on 3 October 1857. The GNR and the L&YR had running powers over the new line, and this enabled the Great Northern Railway Company to route its Doncaster to Leeds trains by this route, using the L&YR from Askern to Wakefield. The junctions near Leeds were with the at Wortley, forming a triangle and enabling through running towards either Leeds or Bradford. This development allowed the GNR to avoid using the hostile Midland Railway track at all, and allowed a direct entry to Leeds Central station, avoiding the awkward reversal on the Thirsk line. Perhaps more significant was the decision to connect to the L&YR station at Bradford (later Bradford Exchange). The station was a terminus, called Adolphus Street, and the connection towards Halifax by-passed it. A new curve was built of that connecting line to allow trains to enter the L&YR terminus; this started on 7 January 1867. Train movements at the throat of the L&YR station were frequent, and congestion became a problem.
Sheffield On 1 January 1847 the
Manchester, Sheffield and Lincolnshire Railway (MS&LR) came into existence by the merger of some smaller lines. The GNR had been granted running powers from Retford to Sheffield and in 1850 it informed the MS&LR that it was to run passenger trains from Lincoln from 7 August 1849. The GNR was not made welcome at Sheffield, but a change of policy from 1856 brought some changes. In particular from 1 August 1857 the GNR "Manchester fliers" started running. They were worked by GNR locomotives through to Sheffield, and covered the 203 miles (325 km) from King's Cross to Manchester London Road via Sheffield in 5hr 20min, soon to be cut to an even five hours. Until February 1859 the GNR paid £1,500 per annum for the use of Victoria, but then made an outright payment of £25,000 to secure permanent half-rights to the station. From 1859 GNR trains also ran to Huddersfield via Sheffield and Penistone.
Halifax and the Queensbury lines From 1866 the Great Northern Railway had the control it wanted in West Yorkshire. A number of additional branches were built; perhaps the most important was the Dewsbury branch. A Dewsbury terminus opened in 1874, but this was followed by a through line to Batley via a new Dewsbury through station, opened in 1880. From 1867, the GNR launched into an expensive and ultimately unremunerative entry into the hilly terrain west of Bradford and north of Halifax. This started with the
Halifax and Ovenden Junction Railway, a short line in the northern heights of Halifax, opened in 1874, jointly with the L&YR. This was followed by the
Bradford and Thornton Railway and the associated
Halifax, Thornton and Keighley Railway. These were built by the GNR at huge expense, with daunting engineering features. They opened progressively from 1876 to 1884.
Pudsey A loop line through Pudsey from Bramley to Laisterdyke was created, opening in 1893, as an extension of an earlier dead end line. ==Lincolnshire==