Thornaby is a railway station on the Tees Valley Line, which runs between and via . The station, situated south-west of Middlesbrough, serves the market town of Thornaby-on-Tees, Borough of Stockton-on-Tees in North Yorkshire, England. It is owned by Network Rail and managed by TransPennine Express. History The station lies on the original Stockton & Darlington Railway (S&DR) extension to Port Darlington, developed from 1828 under the instructions of influential Quaker banker, coal mine owner and S&DR shareholder Joseph Pease, who had sailed up the River Tees to find a suitable new site down river of Stockton on which to place new coal staithes. As a result, in 1829 he and a group of Quaker businessmen bought of land described as "a dismal swamp", and established the Middlesbrough Estate Company. Through the company, the investors intended to develop both a new port, and a suitable town to supply its labour. On 27 December 1830, the S&DR opened an extension across the river to a station at Newport, almost directly north of the current Middlesbrough station. The S&DR quickly later renamed this new station and associated six-coal staithe dock facility as Port Darlington, hoping to market the facility further. So successful was the port, a year after opening the population of Port Darlington had reached 2,350. However, with Port Darlington overwhelmed by the volume of imports and exports, in 1839 work started on Middlesbrough Dock. Laid out by Sir William Cubitt, the whole infrastructure was built by resident civil engineer George Turnbull. After three years and an expenditure of £122,000 (equivalent to £9.65 million at 2011 prices), the formal opening occurred on 12 May 1842. On completion, the docks were bought by the S&DR. As Middlesbrough developed, additional railway facilities were required to marshall goods wagons, and allow workers to access the docks and associated industries. So in 1882 the then named South Stockton railway station was built by the North Eastern Railway (NER), and opened on 1 October. However, in 1892 Parliament granted a charter that created the Borough of Thornaby-on-Tees, which incorporated the village of Thornaby and South Stockton, and so on 1 November 1892 the name of the station was also changed. Thornaby was located on a busy and hence important section of the line for the NER, between Newport and Middlesbrough Docks to the east, and Bowesfield Junction to the west (where the Northallerton/Darlington and Durham Coast