Although at first sight Thompson was young and inexperienced,
Robert Stephenson the engineer for the
North Midland Railway (NMR), recruited him to be the railway company's architect in February 1839. The North Midland was in the early stages of building its line north from
Derby to
Leeds. He designed many publicly acclaimed buildings, including multiple railway stations and warehouses. In Derby, he designed a compete
railway town, featuring
Derby Trijunct station (opened 1840), the meeting point for three railway companies. The station had a three-bay glazed
train shed and a two-storey, red-brick frontage in an Italianate style, described as "the first really great station". Thompson was also responsible for a cluster of buildings around the station, including a
roundhouse, terraced houses for the workers, and the
Midland Hotel, which is among the most representative of his surviving works. The group was the world's first complete complex of railway buildings. The station was remodelled several times in the intervening century and almost completely rebuilt in the 1980s. Thompson designed 13 stations for the NMR, including Belper and Eckington, both since rebuilt, Ambergate (where Thompson's original building survives but has been superseded by newer buildings).
Wingfield railway station, in northern Derbyshire, is the only one Thompson's station buildings to survive largely as-built and is a grade II*
listed building. Notable for his criticism of the extravagant nature of the railway architecture of the day, Whishaw nevertheless praised Thompson's works in Derby, writing: The admirably contrived and elegant roofs, the spacious platforms, the great length of the whole erection extending to upwards of a thousand feet. All unite in rendering it the most complete structure of the kind in the United Kingdom or perhaps the world. which is
Italianate and
Grade II* listed. Thompson and Stephenson went on to work together on the
Chester and Holyhead Railway, for which Thompson designed the architectural elements of the
Britannia Bridge over the
Menai Strait as well as the Italianate
Chester railway station, the frontage of which closely resembles the original station at Derby. The bridge was largely destroyed by fire in 1970, though Thompson's masonry work was incorporated into the rebuilt structure. Thompson was also the architect on the
Conwy Railway Bridge, including making the towers castellated in order to match the nearby 13th-century
Conwy Castle. The Britannia and Menai bridges both used Stephenson's pioneering
tubular design.
Cambridge railway station, along with
Great Chesterford and
Audley End on the
Eastern Counties Railway, were initially credited to
Sancton Wood but are now believed to be the work of Thompson. ==Canada again==