Portal:Trains/Selected article/Week 19, 2018

The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, its first line connected collieries near Shildon with Stockton-on-Tees and Darlington. The movement of coal to ships rapidly became a lucrative business, and the line was soon extended to a new port and town at Middlesbrough. The S&DR was involved in the building of the East Coast Main Line between York and Darlington, but its main expansion was at Middlesbrough Docks and west into Weardale and east to Redcar. It suffered severe financial difficulties at the end of the 1840s and was nearly taken over by the York, Newcastle and Berwick Railway, before the discovery of iron ore in Cleveland and the subsequent increase in revenue meant it could pay its debts. At the beginning of the 1860s it took over railways that had crossed the Pennines to join the West Coast Main Line at Tebay and Clifton, near Penrith. The company was taken over by the North Eastern Railway in 1863, transferring 200 rtmi of line and about 160 locomotives, but continued to operate independently as the Darlington Section until 1876. Much of the original route is now served by the Tees Valley Line, operated by Northern.