Derby ( DAR-bee) is a city and unitary authority area on the River Derwent in Derbyshire, England. Derby was the original county town before the county town status was given to Matlock. As a unitary authority, Derby is administratively independent from Derbyshire County Council. The population of Derby is 275,344 (2025).
The Romans established the town of Derventio, which was later captured by the Anglo-Saxons and then by the Vikings who made Djúra-bý one of the Five Boroughs of the Danelaw. Initially a market town, Derby grew rapidly in the industrial era and was home to Lombe's Mill, an early British factory and it contains the southern part of the Derwent Valley Mills World Heritage Site. With the arrival of the railways in the 19th century, Derby became a centre of the British rail industry. Despite having a cathedral since 1927, Derby did not gain city status until 1977.
Derby is a centre for advanced transport manufacturing. It is home to engine manufacturer Rolls-Royce and Alstom (formerly Bombardier Transportation) has a production facility at the Derby Litchurch Lane Works; Toyota's UK headquarters is located south-west of the city at Burnaston.
Toponymy
The Roman camp of Derventio is considered to have been at Little Chester/Chester Green (grid reference SK353375), the site of the old Roman fort. Later, the town was one of the "Five Boroughs" (fortified towns) of the Danelaw, until it was captured by Lady Æthelflæd of Mercia in July 917, after which the town was annexed to the Kingdom of Mercia.
The Viking name Djúra-bý, recorded in Old English as Deoraby, means "village of the deer". However, the origin of the name Derby has had multiple influences: a variation of the original Roman name Derventio with pronunciation of the letter "v" as "b", becoming Derbentio, and later Derby, along with a link to the river Derwent – from the Celtic meaning "valley thick with oaks" – which flows through the city, triggering a shortened version of Derwent by, meaning 'Derwent settlement'.
The town name appears as Darbye on early maps, such as that of John Speed, 1610.
Modern research (2004) into the history and archaeology of Derby has provided evidence that the Vikings and Anglo-Saxons would have co-existed, occupying two areas of land surrounded by water. The Anglo-Saxon Chronicle (c. 900) says that "Derby is divided by water". These areas of land were known as Norþworþig ("Northworthy"="north enclosure") and Deoraby, and were at the "Irongate" (north) side of Derby.
History
16th–18th centuries
During the Civil War of 1642–1646, Derby was garrisoned by Parliamentary troops commanded by Sir John Gell, 1st Baronet, who was appointed Governor of Derby in 1643. These troops took part in the defence of nearby Nottingham, the siege of Lichfield, the battle of Hopton Heath and many other engagements in Nottinghamshire, Staffordshire and Cheshire, as well as successfully defending Derbyshire against Royalist armies.
The first civic system of piped water in England was established in Derby in 1692, using wooden pipes, which was common for several centuries. The Derby Waterworks included waterwheel-powered pumps for raising water out of the River Derwent and storage tanks for distribution. This was designed and built by local engineer George Sorocold.
During the Jacobite rising of 1745, Jacobite Army troops led by Prince Charles Edward Stuart arrived in Derby on 4 December 1745, while on their way to London to attempt to overthrow the reigning House of Hanover. Stuart called at The George Inn on Irongate (where the Duke of Devonshire had set up his headquarters in late November after raising The Derbyshire Blues) and demanded billets for the 9,000 troops under his command. The prince stayed at Exeter House on Full Street, where he held a council of war on 5 December which decided to retreat. Stuart had received misleading information about a government army coming to meet him south of Derby. He abandoned his invasion at Swarkestone Bridge on the River Trent, a few miles south of Derby. The prince, who on the march from Scotland had walked at the front of the column, made the return journey on horseback at the rear of the bedraggled and tired army.
Shrovetide football was played at Derby every year, possibly from as early as the 12th century. The town was split into the St Peter's and All Saints parishes, who fought to bring the ball from the Market Place to a goal within their own parishes. There were several attempts to ban the game, described in 1846 as "the barbarous and disgusting play of Foot-Ball, which for a great number of years has annually disgraced our town". In that year the military were brought in and after the police cut the first ball to pieces, another ball was produced and the town's Mayor was "struck on the shoulder by a brick-bat, hurled by some ferocious ruffian, and severely bruised". The Derby Football was banned in 1846, although it was played once more in 1870.
Industrial Revolution
Derby and Derbyshire were among the centres of Britain's Industrial Revolution. In 1717, Derby was the site of the first water-powered silk mill in Britain, built by John Lombe and George Sorocold, after Lombe had reputedly stolen the secrets of silk-throwing from Piedmont in Italy (he is alleged to have been poisoned by the Piedmontese as revenge in 1722).
In 1759, Jedediah Strutt patented and built a machine called the Derby Rib Attachment that revolutionised the manufacture of hose. This attachment was used on the Rev. Lee's Framework Knitting Machine; it was placed in front of – and worked in unison with – Lee's Frame, to produce ribbed hose (stockings). The partners were Jedediah Strutt, William Woollatt (who had been joined in 1758 by John Bloodworth and Thomas Stafford, all leading hosiers in Derby). The patent was obtained in January 1759. After three years, Bloodworth and Stafford were paid off, and Samuel Need – a hosier of Nottingham – joined the partnership. The firm was known as Need, Strutt and Woollatt. The patent expired in 1773 though the partnership continued until 1781 when Need died.
Messrs Wright, the bankers of Nottingham, recommended that Richard Arkwright apply to Strutt and Need for finance for his cotton spinning mill. The first mill opened in Nottingham in 1770 and was driven by horses. In 1771 Richard Arkwright, Samuel Need and Jedediah Strutt built the world's first commercially successful water-powered cotton spinning mill at Cromford, Derbyshire, developing a form of power that was to be a catalyst for the Industrial Revolution.
This was followed in Derbyshire by Jedediah Strutt's cotton spinning mills at Belper. They were: South Mill, the first, 1775; North Mill, 1784, which was destroyed by fire on 12 January 1803 and then rebuilt, starting work again at the end of 1804; West Mill, 1792, commenced working 1796; Reeling Mill, 1897; Round Mill, which took 10 years to build, from 1803 to 1813, and commenced working in 1816; and Milford Mills, 1778. The Belper and Milford mills were not built in partnership with Arkwright; they were all owned and financed by Strutt.
Other notable 18th-century figures with connections to Derby include the painter Joseph Wright, known as Wright of Derby, who was known for his innovative use of light in his paintings and was an associate of the Royal Academy; and John Whitehurst, a clockmaker and philosopher. Erasmus Darwin, doctor, scientist, philosopher and grandfather of Charles Darwin, moved to Derby in 1782 and founded the Derby Philosophical Society.
Derby's place in the country's philosophical and political life continued with Henry Hutchinson, an active member of the Fabian Society. On his death in 1894, he left the society an amount in his will which was instrumental in founding the London School of Economics.
The beginning of 19th century saw Derby emerging as an engineering centre, with manufacturers such as James Fox, who exported machine tools to Russia.
In 1840, the North Midland Railway set up its works in Derby and when it merged with the Midland Counties Railway and the Birmingham and Derby Junction Railway to form the Midland Railway, Derby became its headquarters. The connection with the railway encouraged others, notably Andrew Handyside, Charles Fox and his son Francis Fox.
A permanent military presence was established in the city with the completion of Normanton Barracks in 1877.
Derby was one of the boroughs reformed by the Municipal Corporations Act 1835, and it became a county borough with the Local Government Act 1888. The borough expanded in 1877 to include Little Chester and Litchurch, and then in 1890 to include New Normanton and Rowditch. The borough did not increase substantially again until 1968, when under a recommendation of the Local Government Boundary Commission it was expanded into large parts of the rural district of Belper, Repton and South East Derbyshire. This vastly increased Derby's population from 132,408 in the 1961 census to 219,578 in the 1971 census.
Despite being one of the areas of Britain furthest from the sea, Derby holds a special place in the history of marine safety – it was as MP for Derby that Samuel Plimsoll introduced his bills for a "Plimsoll line" (and other marine safety measures). This failed on first introduction, but was successful in 1876 and contributed to Plimsoll's re-election as an MP.
Railway engineering
As a consequence of the Midland Railway having their headquarters in Derby, along with their Locomotive and Carriage & Wagon Works, the railways had been a major influence on the development of the town during the Victorian period.
During the 20th century, railway manufacturing developed elsewhere, while in Derby the emphasis shifted to other industries. Even though it had pioneered the introduction of diesel locomotives, new production finished in 1966. Repair work gradually diminished until the locomotive works closed, the land being redeveloped as Pride Park. The only buildings remaining are those visible from Platform 6 of the station.
The Carriage and Wagon Works has been owned by Alstom since 2021 and continues to build trains. The Railway Technical Centre continues to house railway businesses; this formerly included the headquarters of DeltaRail Group (previously known as the British Rail Research Division).
Derby railway station retains an important position in the railway network. East Midlands Railway operate Derby Etches Park depot while Network Rail and Rail Operations Group also maintain trains in Derby. On 21 March 2023, it was announced that the city was to be the headquarters of Great British Railways.
Derby is also the headquarters of the Derby Railway Engineering Society, founded in 1908 to promote railway engineering expertise both in the city and nationally.
20th century to present day
An industrial boom began in Derby when Rolls-Royce opened a car and aircraft factory in the town in 1907. In 1923, the Midland Railway became part of the London, Midland & Scottish Railway with headquarters in London. However, Derby remained a major rail manufacturing centre, second only to Crewe and Wolverton. Moreover, it remained a design and development centre and in the 1930s, on the direction of Lord Stamp, the LMS Scientific Research Laboratory was opened on London Road.
In 1911, the Derby Wireless Club was formed by a group of local engineers and experimenters. It was to be the first radio or "wireless club" in the country. The early activities of the club, (even through World Wars), pushed the boundaries of 'wireless' technologies at the time in England, and promoted it into becoming a hobby for many local folk.
{Over later years, as radio technology progressed, the club transitioned to become the Derby & District Amateur Radio Society (DADARS), continuing to host meetings and events for radio hobbyists with all the new technologies, into the early 2020s.}
In World War I, Derby was targeted by German Zeppelin air bombers, who killed five people in a 1916 raid on the town.
All Saints Church was designated as a cathedral in 1927, signalling that the town was ready for city status.
Slum clearance in the 1920s and 1930s saw the central area of Derby become less heavily populated as families were rehoused on new council estates in the suburbs, where houses for private sale were also constructed. Rehousing, council house building and private housing developments continued on a large scale for some 30 years after the end of World War II in 1945.
Production and repair work continued at the railway works. In December 1947 the Locomotive Works unveiled Britain's first mainline passenger diesel-electric locomotive – "Number 10000". In 1958 production switched over to diesel locomotives completely. Meanwhile, the Carriage & Wagon Works were building the first of the Diesel Multiple Units that were to take over many of the services.
In 1964 the British Rail Research Division opened to study all aspects of railway engineering from first principles. Its first success was in drastically improving the reliability and speed of goods trains, work which led to the development of the Advanced Passenger Train.