United Kingdom

Although historical records refer to emigration to North America in the 17th and 18th centuries, there is little quantitative information about such movements before the middle of the following century. The greatest numbers appear to have left Great Britain in the 1880s and between 1900 and the outbreak of World War I. Emigration, particularly to Canada, Australia, and New Zealand (“Old Commonwealth” countries), continued at a high rate after the war until 1930, when unfavourable economic conditions in the British Empire and in the United States reversed the movement. During the same years, there also was an influx of refugees from Europe. After World War II both inward and outward movements were considerable. Emigration to the countries of the Old Commonwealth and, to a lesser degree, to the United States continued, but until 1951 immigration into Britain roughly equaled British emigration to the rest of the world. Since the mid-1960s there has been a slackening of emigration, as Canada and Australia no longer maintain an open-door policy to citizens of the United Kingdom, accepting only those whose skills are in demand. Nevertheless, the United Kingdom continues to be an exporter of population, albeit on a declining scale, to the Old Commonwealth, while emigration to the nations of the European Union and other foreign countries has increased.

Migration within the United Kingdom has at times been sizable. Until 1700 the relatively small population was sparsely distributed and largely rural and agricultural, much as it had been in medieval times. From the mid-18th century, scientific and technological innovations created the first modern industrial state. At the same time, agriculture underwent technical and tenurial changes that allowed increased production with a smaller workforce, and revolutionary improvements in transport facilitated the movement of materials and people. As a result, by the late 19th century a theretofore mainly rural population had largely become a nation of industrial workers and town dwellers.

The rural exodus was a long process. The breakdown of communal farming started before the 14th century. Subsequently enclosures advanced steadily, especially after 1740, until a century later open fields had virtually disappeared from the landscape. Many of the displaced landless agricultural labourers were attracted to the better employment opportunities and the higher wage levels of the growing industries. Meanwhile, a rapid rise in the birth rate had produced a growing population of young people in the countryside who faced little prospect of agricultural employment. These groups contributed to a high volume of internal migration toward the towns.

Industry, as well as the urban centres that inevitably grew up around it, concentrated near the coalfields, while the railway network, which grew rapidly after 1830, enhanced the commercial importance of many towns. The migration of people, especially young people, from the country to industrialized towns took place at an unprecedented rate in the early railway age, and such movements were relatively confined geographically. Migration from agricultural Ireland provided an exception, for, when the disastrous potato disease of 1845–49 led to widespread famine, large numbers moved to Great Britain to become urban workers in Lancashire, Clydeside (the Glasgow region), and London. The rural exodus continued, but on a greatly reduced scale, after 1901.

Soon after World War I, new interregional migration flows commenced when the formerly booming 19th-century industrial and mining districts lost much of their economic momentum. Declining or stagnating heavy industry in Clydeside, northeastern England, South Wales, and parts of Lancashire and Yorkshire swelled the ranks of the unemployed, and many migrated to the relatively more prosperous Midlands and southern England. This movement of people continued until it was arrested by the relatively full employment conditions that obtained soon after the outbreak of World War II.

In the 1950s opportunities for employment in the United Kingdom improved with government-sponsored diversification of industry, reducing the volume of migration to the south. The decline of certain northern industries—coal mining, shipbuilding, and cotton textiles in particular—had nevertheless reached a critical level by the late 1960s, and the emergence of new growth points in the West Midlands and southeastern England made the drift to the south a continuing feature of British economic life. During the 1960s and ’70s the areas of most rapid growth were East Anglia, the South West, and the East Midlands, partly because of limitations on growth in Greater London and the development of peripheral new towns in surrounding areas.